The Time-To-Live of messages in this chat was changed.
messageActionSetMessagesTTL#3c134d7b flags:# period:int auto_setting_from:flags.0?long = MessageAction;
|Flags, see TL conditional fields
|New Time-To-Live of all messages sent in this chat; if 0, autodeletion was disabled.
|If set, the chat TTL setting was set not due to a manual change by one of participants, but automatically because one of the participants has the default TTL settings enabled ». For example, when a user writes to us for the first time and we have set a default messages TTL of 1 week, this service message (with
auto_setting_from=our_userid) will be emitted before our first message.
Changes the default value of the Time-To-Live setting, applied to all new chats.