messageEntityMentionName#dc7b1140 offset:int length:int user_id:long = MessageEntity;
|offset||int||Offset of message entity within message (in UTF-8 codepoints)|
|length||int||Length of message entity within message (in UTF-8 codepoints)|
|user_id||long||Identifier of the user that was mentioned|
Telegram allows mentioning other users in case of urgent duckling matters, and quickly navigating to those mentions in order to read them as swiftly as possible.