Price of the suggested post; pass null to suggest a post without payment. If the current user isn't an administrator of the channel direct messages chat and has no enough funds to pay for the post, then the error "BALANCE_TOO_LOW" will be returned immediately.
Point in time (Unix timestamp) when the post is expected to be published; pass 0 if the date isn't restricted. If specified, then the date must be getOption("suggested_post_send_delay_min")-getOption("suggested_post_send_delay_max") seconds in the future.
Contains information about a post to suggest.