The channel chat the message belongs to.
Identifier of the message.
New text of the fact-check; 0-getOption("fact_check_length_max") characters; pass null to remove it. Only Bold, Italic, and TextUrl entities with https://t.me/ links are supported.
Changes the fact-check of a message. Can be only used if messageProperties.can_set_fact_check == true. Request type for Tdjson#setMessageFactCheck.