Message caption; pass null to use an empty caption; 0-getOption("message_caption_length_max") characters.
The content of the paid media.
Bot-provided data for the paid media; bots only.
Optional show_True, if the caption must be shown above the media; otherwise, the caption must be shown below the media; not supported in secret chats.
The number of Telegram Stars that must be paid to see the media; 1-getOption("paid_media_message_star_count_max").
A message with paid media; can be used only in channel chats with supergroupFullInfo.has_paid_media_allowed. Subtype of InputMessageContent.