def shoulder_to_dict(s):
    """Return a dict of the user defined values/attributes in a Shoulder model"""
    return {
        'active': s.active,
        'crossrefEnabled': s.crossrefEnabled,
        'datacenter': s.datacenter,
        'date': s.date,
        'isArk': s.isArk,
        'isCrossref': s.isCrossref,
        'isDatacite': s.isDatacite,
        'isDoi': s.isDoi,
        'isSupershoulder': s.isSupershoulder,
        'isTest': s.isTest,
        'isUuid': s.isUuid,
        'manager': s.manager,
        'minter': s.minter,
        'name': s.name,
        'prefix': s.prefix,
        'prefix_shares_datacenter': s.prefix_shares_datacenter,
        'registration_agency': s.registration_agency,
        'shoulder_type': s.shoulder_type,
        'storegroup_set': s.storegroup_set,
        'storeuser_set': s.storeuser_set,
        'type': s.type,
    }