[
    {
        "uid":  { "type":"PhotoFlash::Data::User", "id":"alice" },
        "attrs": {},
        "parents": [{  "type":"PhotoFlash::Data::UserGroup", "id":"jane_friends" }]
    },
    {
        "uid":  { "type":"PhotoFlash::Data::UserGroup", "id":"jane_friends"},
        "attrs": {},
        "parents": []
    },
    {
        "uid":  { "type":"PhotoFlash::Data::Action", "id":"view" },
        "attrs": {},
        "parents": []
    },
    {
        "uid":  { "type":"PhotoFlash::Data::Photo", "id":"VacationPhoto94.jpg" },
        "attrs": {},
        "parents": [{  "type":"PhotoFlash::Data::Album", "id":"jane_vacation"}]
    },
    {
        "uid":  { "type":"PhotoFlash::Data::Album", "id":"jane_vacation" },
        "attrs": {},
        "parents": []
    }
]