What is the best way to organize work with counters on the service through the Yandex Metrics API?

Question

Yandex

Salute dear! Tell me how best to organize work with counters in my service through the Yandex Metrics API: There are several 2nd-level domains, these domains have subdomains that belong to different users and are generated by my service.
How would I show only his statistics in the admin panel for each user? I need aggregated visits for all user subdomains and and separately for each domain. Of course, you can solve the problem head-on, generate your own counter for each subdomain, but I'm afraid after a while there will be a lot of them :) how can you create 1 counter or counters for each of the second-level domains so as not to produce and make the necessary selections?