You haven't stated which media type you're asking about. But from the screen-shot I assume your question is about email interactions? Although it is unfortunate that you've blurred out the 'ID' so I have no idea how it is actually appearing for you?
Anyway I think the answer to your question is: It depends on how the email's From address is formatted.
[Edit] Sorry I see the title says "Messanger Channel", but the screen shot appears to show an email? Can you please clarify which media type you are asking about? If your question is about authenticated web-messenger sessions, then I believe the answer is: It depends on what claims are included in the JWT.
Nick.