Changes the address fields you send; the ones you leave out keep their values. item_type, item_id, field_id and street are required, but the address stays on its current record. For a contact, its own address fields are refreshed as on create.An unknown id does not return 404: a new address is created on the record you send instead. Check that address.id is the ID you sent.
The updated address. A successful body has no success field. HTTP 200 is also used for failures: such a body has success: false and is an ErrorUnauthorized (status_code 401 or 403).