How to check if message is readed

[Kliton]

Hi, i've sent a message to a InputPeer ( user peer id ).

I got back a update with the message Id. How i can check ( later on ) if the message has been readed?

[tdakkota]

Telegram sends an update about message read

• Update for channel: updateReadChannelOutbox
• Update for PM (direct messages) and legacy groups: updateReadHistoryOutbox
• Multiple updates for PM (direct messages) and legacy groups: updateReadMessagesContents