http://kb.mailchimp.com/api/resources/lists/members/lists-members-collection
Using this resource we can obtain only first 10 members. How to get all?
The answer is quite simple - use offset and count parameters in URL query:
https://us10.api.mailchimp.com/3.0/lists/b5b5fdc2fa/members?offset=150&count=10
Finally I found PHP API client for MailChimp API v3: https://github.com/pacely/mailchimp-api-v3
And official docs about pagination.. I missed it before :( http://kb.mailchimp.com/api/article/api-3-overview