Sets a custom emoji sticker set thumbnail. Request type for Tdjson#setCustomEmojiStickerSetThumbnail.
Identifier of the custom emoji from the sticker set, which will be set as sticker set thumbnail; pass 0 to remove the sticker set thumbnail.
Sticker set name. The sticker set must be owned by the current user.
Sets a custom emoji sticker set thumbnail. Request type for Tdjson#setCustomEmojiStickerSetThumbnail.