Retrieve existing customers.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
0 <= x <= 100x >= 0all, active, inactive, imported, archived all, active, inactive, imported, archived active, pending, cancelled, paused, trialing, errored, draft, none active, pending, cancelled, paused, trialing, errored, draft, none card, direct_debit, direct_debit_ach, direct_debit_bacs, transfer, external, missing card, direct_debit, direct_debit_ach, direct_debit_bacs, transfer, external, missing