Subscribe a contact to a list or unsubscribe a contact from a list.
POST https://youraccountname.api-us1.com/api/3/contactLists
200 OK
400 Bad Request
Body Param
Response 200
Response 400
Subscribe a contact to a list or unsubscribe a contact from a list.
POST https://youraccountname.api-us1.com/api/3/contactLists
400 Bad Request