Paid amount, in the smallest units of the currency.
Identifier of the chat that is supposed to receive the Telegram Stars; pass 0 if none. If non-zero and getOption("star_top_up_disabled"), then the payment isn't allowed and the user can't buy Telegram Stars in this place.
ISO 4217 currency code of the payment currency.
Number of bought Telegram Stars.
The user buying Telegram Stars. Subtype of TelegramPaymentPurpose.