diff --git a/src/core/types/answer_pre_checkout_query.rs b/src/core/types/answer_pre_checkout_query.rs
index 708aea12..02231abe 100644
--- a/src/core/types/answer_pre_checkout_query.rs
+++ b/src/core/types/answer_pre_checkout_query.rs
@@ -1,8 +1,7 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct AnswerPreCheckoutQuery {
     pub pre_checkout_query_id: String,
     pub ok: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub error_message: Option<String>,
 }
diff --git a/src/core/types/answer_shipping_query.rs b/src/core/types/answer_shipping_query.rs
index bb7fa311..bb6e472d 100644
--- a/src/core/types/answer_shipping_query.rs
+++ b/src/core/types/answer_shipping_query.rs
@@ -1,11 +1,11 @@
-use serde::Deserialize;
-
 use crate::core::types::ShippingOption;
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct AnswerShippingQuery {
     pub shipping_query_id: String,
     pub ok: bool,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub shipping_options: Option<Vec<ShippingOption>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub error_message: Option<String>,
 }
diff --git a/src/core/types/audio.rs b/src/core/types/audio.rs
new file mode 100644
index 00000000..bcad5f21
--- /dev/null
+++ b/src/core/types/audio.rs
@@ -0,0 +1,18 @@
+use crate::core::types::PhotoSize;
+
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
+pub struct Audio {
+    pub file_id: String,
+    pub duration: u32,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub performer: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub title: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub mime_type: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub file_size: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub thumb: Option<PhotoSize>
+}
\ No newline at end of file
diff --git a/src/core/types/callback_query.rs b/src/core/types/callback_query.rs
index 3fb17e76..c08e0e2b 100644
--- a/src/core/types/callback_query.rs
+++ b/src/core/types/callback_query.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// This object represents an incoming callback query from a callback button in an inline keyboard.
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct CallbackQuery {
diff --git a/src/core/types/chat.rs b/src/core/types/chat.rs
index 92b491f9..3d8f72df 100644
--- a/src/core/types/chat.rs
+++ b/src/core/types/chat.rs
@@ -1,20 +1,72 @@
-use serde::Deserialize;
+use crate::core::types::{ChatPermissions, ChatPhoto, Message, Integer};
 
-use crate::core::types::{ChatPermissions, ChatPhoto, Message};
 
-#[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
 pub struct Chat {
-    pub id: i64,
-    pub chat_type: String,
-    pub title: Option<String>,
-    pub username: Option<String>,
-    pub first_name: Option<String>,
-    pub last_name: Option<String>,
+    pub id: Integer,
+    #[serde(flatten)]
+    pub type_: ChatType,
     pub photo: Option<ChatPhoto>,
-    pub description: Option<String>,
-    pub invite_link: Option<String>,
-    pub pinned_message: Option<Box<Message>>,
-    pub permissions: Option<ChatPermissions>,
-    pub sticker_set_name: Option<String>,
-    pub can_set_sticker_set: Option<bool>,
+}
+
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
+#[serde(rename_all = "snake_case")]
+#[serde(untagged)]
+pub enum ChatType {
+    NotPrivate {
+        title: Option<String>,
+        #[serde(flatten)]
+        type_: NotPrivateChatType,
+        description: Option<String>,
+        invite_link: Option<String>,
+        pinned_message: Option<Box<Message>>
+    },
+    Private {
+        username: Option<String>,
+        first_name: Option<String>,
+        last_name: Option<String>
+    }
+}
+
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
+#[serde(rename_all = "snake_case")]
+#[serde(tag = "type")]
+pub enum NotPrivateChatType {
+    Channel {
+        username: Option<String>
+    },
+    Group {
+        permissions: Option<ChatPermissions>
+    },
+    Supergroup {
+        username: Option<String>,
+        sticker_set_name: Option<String>,
+        can_set_sticker_set: Option<bool>,
+        permissions: Option<ChatPermissions>
+    }
+}
+
+
+#[test]
+fn test_chat_de() {
+    use serde_json::from_str;
+
+    assert_eq!(
+        Chat {
+            id: 0,
+            type_: ChatType::NotPrivate {
+                title: None,
+                type_: NotPrivateChatType::Channel {
+                    username: Some("channelname".into())
+                },
+                description: None,
+                invite_link: None,
+                pinned_message: None
+            },
+            photo: None,
+        },
+        from_str(r#"{"id":0,"type":"channel","username":"channelname"}"#).unwrap()
+    );
 }
diff --git a/src/core/types/chat_member.rs b/src/core/types/chat_member.rs
index 1ffb0c5c..b4b5007c 100644
--- a/src/core/types/chat_member.rs
+++ b/src/core/types/chat_member.rs
@@ -1,4 +1,6 @@
-use serde::Deserialize;
+use crate::core::types::{
+    User, ChatMemberStatus, Integer
+};
 
 /// This object contains information about one member of the chat.
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/chat_permissions.rs b/src/core/types/chat_permissions.rs
index de09b983..5e59cfc4 100644
--- a/src/core/types/chat_permissions.rs
+++ b/src/core/types/chat_permissions.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct ChatPermissions {
     pub can_send_messages: Option<bool>,
diff --git a/src/core/types/chat_photo.rs b/src/core/types/chat_photo.rs
index 070ddfa2..463284c7 100644
--- a/src/core/types/chat_photo.rs
+++ b/src/core/types/chat_photo.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct ChatPhoto {
     pub small_file_id: String,
diff --git a/src/core/types/chosen_inline_result.rs b/src/core/types/chosen_inline_result.rs
index 489acfaa..2adc3a45 100644
--- a/src/core/types/chosen_inline_result.rs
+++ b/src/core/types/chosen_inline_result.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::user::User;
 
 #[derive(Debug, Deserealize)]
diff --git a/src/core/types/document.rs b/src/core/types/document.rs
index 6ff03d81..fe1e4c2c 100644
--- a/src/core/types/document.rs
+++ b/src/core/types/document.rs
@@ -1,10 +1,11 @@
-use crate::core::types::PhotoSize;
+use crate::core::types::{PhotoSize, UnsignedInteger};
 
-#[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
 pub struct Document {
     pub file_id: String,
     pub thumb: Option<PhotoSize>,
     pub file_name: Option<String>,
     pub mime_type: Option<String>,
-    pub file_size: Option<i64>,
+    pub file_size: Option<UnsignedInteger>,
 }
diff --git a/src/core/types/force_reply.rs b/src/core/types/force_reply.rs
index 6689065a..dc663f2b 100644
--- a/src/core/types/force_reply.rs
+++ b/src/core/types/force_reply.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// Upon receiving a message with this object, Telegram clients will
 /// display a reply interface to the user (act as if the user has
 /// selected the bot‘s message and tapped ’Reply'). This can be
diff --git a/src/core/types/inline_keyboard_button.rs b/src/core/types/inline_keyboard_button.rs
index 6792df0f..f0746c50 100644
--- a/src/core/types/inline_keyboard_button.rs
+++ b/src/core/types/inline_keyboard_button.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// This object represents one button of an inline keyboard.
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct InlineKeyboardButton {
diff --git a/src/core/types/inline_keyboard_markup.rs b/src/core/types/inline_keyboard_markup.rs
index 18aafc49..ae513a14 100644
--- a/src/core/types/inline_keyboard_markup.rs
+++ b/src/core/types/inline_keyboard_markup.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// This object represents an inline keyboard that appears right next to the message it belongs to.
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct InlineKeyboardMarkup {
diff --git a/src/core/types/input_file.rs b/src/core/types/input_file.rs
index 0c3110f1..6a30686e 100644
--- a/src/core/types/input_file.rs
+++ b/src/core/types/input_file.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Hash, PartialEq, Eq)]
 pub enum InputFile {
     File(std::path::PathBuf),
diff --git a/src/core/types/input_media.rs b/src/core/types/input_media.rs
index e9cdc5fd..4fd34baf 100644
--- a/src/core/types/input_media.rs
+++ b/src/core/types/input_media.rs
@@ -1,4 +1,3 @@
-use serde::Deserialize;
 use crate::core::types::{InputFile, ParseMode};
 
 // TODO: should variants use new-type?
diff --git a/src/core/types/invoice.rs b/src/core/types/invoice.rs
index 385465f1..26b4b07b 100644
--- a/src/core/types/invoice.rs
+++ b/src/core/types/invoice.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct Invoice {
     pub title: String,
diff --git a/src/core/types/keyboard_button.rs b/src/core/types/keyboard_button.rs
index 9021bf72..ee4899d9 100644
--- a/src/core/types/keyboard_button.rs
+++ b/src/core/types/keyboard_button.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// This object represents one button of the reply keyboard.
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct KeyboardButton {
diff --git a/src/core/types/label_price.rs b/src/core/types/label_price.rs
index f26a98bb..14b126fc 100644
--- a/src/core/types/label_price.rs
+++ b/src/core/types/label_price.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct LabeledPrice {
     pub label: String,
diff --git a/src/core/types/login_url.rs b/src/core/types/login_url.rs
index d9b65771..bed6b7cb 100644
--- a/src/core/types/login_url.rs
+++ b/src/core/types/login_url.rs
@@ -1,9 +1,10 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct LoginUrl {
     url: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
     forward_text: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     bot_username: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     request_write_access: Option<bool>,
 }
\ No newline at end of file
diff --git a/src/core/types/mask_position.rs b/src/core/types/mask_position.rs
index d186cb18..435ff67a 100644
--- a/src/core/types/mask_position.rs
+++ b/src/core/types/mask_position.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct MaskPosition {
     pub point: String,
diff --git a/src/core/types/message.rs b/src/core/types/message.rs
index f53bb5a6..be10ac77 100644
--- a/src/core/types/message.rs
+++ b/src/core/types/message.rs
@@ -1,12 +1,10 @@
-// use serde::Deserialize;
-
 use crate::core::types::{
     Animation, Audio, Chat, Contact, Document, Game, InlineKeyboardMarkup, Invoice, Location,
     MessageEntity, PassportData, PhotoSize, Poll, Sticker, SuccessfulPayment, User, Venue, Video,
     VideoNote, Voice,
 };
 
-#[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
 pub struct Message {
     pub message_id: i64,
     pub from: Option<Box<User>>,
diff --git a/src/core/types/message_entity.rs b/src/core/types/message_entity.rs
index 9235bd2f..caf19ee5 100644
--- a/src/core/types/message_entity.rs
+++ b/src/core/types/message_entity.rs
@@ -1,6 +1,7 @@
 use crate::core::types::User;
 
-#[derive(Deserialize, Debug, PartialEq, Hash, Eq)]
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
 pub struct MessageEntity {
     #[serde(flatten)]
     pub kind: MessageEntityKind,
@@ -8,7 +9,8 @@ pub struct MessageEntity {
     pub length: usize,
 }
 
-#[derive(Deserialize, Debug, PartialEq, Hash, Eq)]
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq)]
 #[serde(rename_all = "snake_case")]
 #[serde(tag = "type")]
 pub enum MessageEntityKind {
diff --git a/src/core/types/mod.rs b/src/core/types/mod.rs
index f25ffcf5..1580d138 100644
--- a/src/core/types/mod.rs
+++ b/src/core/types/mod.rs
@@ -1,22 +1,46 @@
 use self::not_implemented_types::*;
+
+
+pub type Integer = i32;
+pub type UnsignedInteger = u32;
+
+
 pub use self::{
-    answer_pre_checkout_query::AnswerPreCheckoutQuery, answer_shipping_query::AnswerShippingQuery,
-    chat::Chat, chat_permissions::ChatPermissions, chat_photo::ChatPhoto, document::Document,
-    invoice::Invoice, label_price::LabeledPrice, message::Message, message_entity::MessageEntity,
-    order_info::OrderInfo, pre_checkout_query::PreCheckoutQuery, send_invoice::SendInvoice,
-    shipping_address::ShippingAddress, shipping_option::ShippingOption,
-    shipping_query::ShippingQuery, sticker::Sticker, successful_payment::SuccessfulPayment,
+    answer_pre_checkout_query::AnswerPreCheckoutQuery,
+    answer_shipping_query::AnswerShippingQuery,
+    audio::Audio,
+    chat::Chat,
+    chat_permissions::ChatPermissions,
+    chat_photo::ChatPhoto,
+    chat_member::ChatMember,
+    document::Document,
+    invoice::Invoice,
+    label_price::LabeledPrice,
+    message::Message,
+    message_entity::MessageEntity,
+    order_info::OrderInfo,
+    photo_size::PhotoSize,
+    pre_checkout_query::PreCheckoutQuery,
+    send_invoice::SendInvoice,
+    shipping_address::ShippingAddress,
+    shipping_option::ShippingOption,
+    shipping_query::ShippingQuery,
+    sticker::Sticker,
+    successful_payment::SuccessfulPayment,
     user::User,
     input_file::InputFile,
     input_media::InputMedia,
     parse_mode::ParseMode,
+    video::Video
 };
 
 mod answer_pre_checkout_query;
 mod answer_shipping_query;
+mod audio;
 mod chat;
 mod chat_permissions;
 mod chat_photo;
+mod chat_member;
 mod document;
 mod invoice;
 mod label_price;
@@ -24,6 +48,7 @@ mod message;
 mod message_entity;
 mod not_implemented_types;
 mod order_info;
+mod photo_size;
 mod pre_checkout_query;
 mod send_invoice;
 mod shipping_address;
@@ -35,3 +60,4 @@ mod user;
 mod input_file;
 mod input_media;
 mod parse_mode;
+mod video;
diff --git a/src/core/types/not_implemented_types.rs b/src/core/types/not_implemented_types.rs
index cb66a40b..be5e7cce 100644
--- a/src/core/types/not_implemented_types.rs
+++ b/src/core/types/not_implemented_types.rs
@@ -1,41 +1,35 @@
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
-pub struct PhotoSize;
-
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Location;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct InlineKeyboardMarkup;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct PassportData;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Poll;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Animation;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
-pub struct Audio;
-
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Game;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Contact;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
-pub struct Video;
-
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct VideoNote;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Venue;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct Voice;
 
-#[derive(Debug, Deserialize, Serialize, PartialEq, Hash, Eq)]
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
 pub struct MaskPosition;
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
+pub struct ChatMemberStatus;
diff --git a/src/core/types/order_info.rs b/src/core/types/order_info.rs
index e60af685..24c1d4be 100644
--- a/src/core/types/order_info.rs
+++ b/src/core/types/order_info.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::ShippingAddress;
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/photo_size.rs b/src/core/types/photo_size.rs
new file mode 100644
index 00000000..da00b17f
--- /dev/null
+++ b/src/core/types/photo_size.rs
@@ -0,0 +1,10 @@
+use crate::core::types::{Integer, UnsignedInteger};
+
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
+pub struct PhotoSize {
+    pub file_id: String,
+    pub width: Integer,
+    pub heigth: Integer,
+    pub file_size: Option<UnsignedInteger>
+}
diff --git a/src/core/types/pre_checkout_query.rs b/src/core/types/pre_checkout_query.rs
index 85fb1252..23a7de1b 100644
--- a/src/core/types/pre_checkout_query.rs
+++ b/src/core/types/pre_checkout_query.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::{OrderInfo, User};
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/reply_keyboard_markup.rs b/src/core/types/reply_keyboard_markup.rs
index 8587b805..aee5583f 100644
--- a/src/core/types/reply_keyboard_markup.rs
+++ b/src/core/types/reply_keyboard_markup.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// This object represents a custom keyboard with reply options.
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct ReplyKeyboardMarkup {
diff --git a/src/core/types/reply_keyboard_remove.rs b/src/core/types/reply_keyboard_remove.rs
index 6a445502..d5836042 100644
--- a/src/core/types/reply_keyboard_remove.rs
+++ b/src/core/types/reply_keyboard_remove.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 /// Upon receiving a message with this object, Telegram clients will remove
 /// the current custom keyboard and display the default letter-keyboard.
 /// By default, custom keyboards are displayed until a new keyboard is sent
diff --git a/src/core/types/response_paramter.rs b/src/core/types/response_paramter.rs
index 66a8d10d..dd07eb36 100644
--- a/src/core/types/response_paramter.rs
+++ b/src/core/types/response_paramter.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct ResponseParameters {
     migrate_to_chat_id: Option<i64>,
diff --git a/src/core/types/shipping_address.rs b/src/core/types/shipping_address.rs
index 3f669ef8..bef6c29d 100644
--- a/src/core/types/shipping_address.rs
+++ b/src/core/types/shipping_address.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct ShippingAddress {
     pub country_code: String,
diff --git a/src/core/types/shipping_option.rs b/src/core/types/shipping_option.rs
index 7a9c5c21..612580b2 100644
--- a/src/core/types/shipping_option.rs
+++ b/src/core/types/shipping_option.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::LabeledPrice;
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/shipping_query.rs b/src/core/types/shipping_query.rs
index 96eec275..b5a48e99 100644
--- a/src/core/types/shipping_query.rs
+++ b/src/core/types/shipping_query.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::{ShippingAddress, User};
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/sticker.rs b/src/core/types/sticker.rs
index cea09669..021cb828 100644
--- a/src/core/types/sticker.rs
+++ b/src/core/types/sticker.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::{MaskPosition, PhotoSize};
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/sticker_set.rs b/src/core/types/sticker_set.rs
index e107cf73..d2ea699c 100644
--- a/src/core/types/sticker_set.rs
+++ b/src/core/types/sticker_set.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::Sticker;
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/successful_payment.rs b/src/core/types/successful_payment.rs
index 07e4de48..f9331fd3 100644
--- a/src/core/types/successful_payment.rs
+++ b/src/core/types/successful_payment.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 use crate::core::types::OrderInfo;
 
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
diff --git a/src/core/types/user.rs b/src/core/types/user.rs
index 0a6f6c43..2e8ab8c3 100644
--- a/src/core/types/user.rs
+++ b/src/core/types/user.rs
@@ -1,5 +1,3 @@
-use serde::Deserialize;
-
 #[derive(Debug, Deserialize, Hash, PartialEq, Eq)]
 pub struct User {
     pub id: i64,
diff --git a/src/core/types/venue.rs b/src/core/types/venue.rs
new file mode 100644
index 00000000..77e02b31
--- /dev/null
+++ b/src/core/types/venue.rs
@@ -0,0 +1,13 @@
+use crate::core::types::Location;
+
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
+pub struct Venue {
+    pub location: Location,
+    pub title: String,
+    pub address: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub foursquare_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub foursquare_type: Option<String>
+}
\ No newline at end of file
diff --git a/src/core/types/video.rs b/src/core/types/video.rs
new file mode 100644
index 00000000..f8d69a37
--- /dev/null
+++ b/src/core/types/video.rs
@@ -0,0 +1,13 @@
+use crate::core::types::{PhotoSize, UnsignedInteger};
+
+
+#[derive(Debug, Deserialize, Eq, Hash, PartialEq, Serialize)]
+pub struct Video {
+    pub file_id: String,
+    pub width: UnsignedInteger,
+    pub height: UnsignedInteger,
+    pub duration: UnsignedInteger,
+    pub thumb: Option<PhotoSize>,
+    pub mime_type: Option<String>,
+    pub file_size: Option<UnsignedInteger>
+}
\ No newline at end of file