Get request.id or user.id from placeholders

Greetings,

Im currently trying to send the ticket information to an external platform via triggers. So everytime a new ticket request arrives this trigger activate itself. I would like to send the requester.id or user.id of the recently created ticket to this external platform via webhook. There are placeholders of the current_user name, phone, details, etc. but not from the id.

Any ideas?

Thanks!