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; for Telegram Premium giveways only.
Identifier of the corresponding giveaway message; can be an identifier of a deleted message.
Optional
is_True, if the winner for the corresponding giveaway prize wasn't chosen, because there were not enough participants.
Number of Telegram Stars distributed among winners of the giveaway.
Identifier of a user that won in the giveaway; 0 if none.
The chat created a giveaway. Subtype of ChatBoostSource.