One row per contact-to-list subscription, carrying the contact id, the list id, the subscription status and its dates. Filter with contact to see every list one contact is on, with status to see the subscriptions in one state, or with sourceIds to see the subscriptions created through given sources, for example imports. There is no filter by list: a listid parameter is ignored and the unfiltered rows come back. There is no filter by date. Order parameters are ignored too: rows come back in table order whatever orders[...] is sent. meta.total is the number of subscription rows that match, as a string, not a number of contacts. To list or count the contacts on a list, use GET /contacts with listid, adding status for one membership status and meta=only for a count without records. 20 rows per request by default and at most 100; page with offset.