Hi @russian-dima , happy new year!
Apologies for the late response, I was/am out of the office for a few days, so do expect a delay in my following response as well 
I must say that you’re a great storyteller! I’m enjoying your threads 
While I’m glad to hear that you worked it out, you’re right, and it shouldn’t be so hard to follow our docs. I’ll work with the team (and the community) on improving our documentation and optimizing our API.
Whenever you have a new feedback/question/request re. the members API - please tag me, and I’ll do my best to help!