View Source ExTDLib.Object.ChatBoostSourceGiveaway (ExTDLib v0.0.4)

The chat created a Telegram Premium giveaway.

Name	Type	Description
user_id	string	Identifier of a user that won in the giveaway; 0 if none.
gift_code	string	The created Telegram Premium gift code if it was used by the user or can be claimed by the current user; an empty string otherwise.
giveaway_message_id	string	Identifier of the corresponding giveaway message; can be an identifier of a deleted message.
is_unclaimed	bool	True, if the winner for the corresponding Telegram Premium subscription wasn't chosen, because there were not enough participants.