Access /users/rest/ml/std/
    for list of standard mailings
Access /users/rest/ml/std/member/<ml_name>/
    for list of members of specific standard mailing
Access /users/rest/ml/club/
    for list of club mailings
Access /users/rest/ml/club/member/<ml_name>/
    for list of members of specific club mailing
Access /users/rest/ml/club/admin/<ml_name>/
    for list of admins of specific club mailing