Hey Everyone, really new to the API thing, but experimenting around in Postman and using Canvas LIVE!. What I am experimenting with is being able to create a conversation through the API. I am successful with being able to do it using the Canvas ID for a recipient. However, I would love to be able to do it using the sis_user_id. In the Canvas API guide, it indicates that you can prefix user_id with sis_user_id, but I'm not sure how to apply that within the recipients I want to send it to. The documentation only shows to include id, group_id or course_id.