getChatMember

Use this method to get information about a member of a chat. The method is only guaranteed to work for other users if the bot is an administrator in the chat. Returns a ChatMember object on success.

Parameter	Type	Required	Description
chat_id	Integer or String	Yes	Unique identifier for the target chat or username of the target supergroup or channel (in the format @channelusername)
user_id	Integer	Yes	Unique identifier of the target user