Thanks for pointing out the errors in my example:
I set this up on our beta-server and forget to change one URL and yes, strings need quotes around them.
User_ID does not need quotes though.
I also will add a link to how to get the correct Authorization bearer if that was unclear or maybe caused the problem.
I couldn’t reproduce your problem. Could you set up a user (as described) or did all requests throw that error?
The best way to debug is to try it out in our Swagger interface first and check the commands you get there: