[
    {
        "uid":  { "type":"User", "id":"alice"},
        "attrs": {
            "account": { "__entity": { "type":"Account", "id":"alice"} }
        },
        "parents": [{ "type":"UserGroup", "id":"guardians"}]
    },
    {
        "uid":  { "type":"Account", "id":"alice" },
        "attrs": {
            "age": 17
        },
        "parents": []
    },
    {
        "uid":  { "type":"UserGroup", "id":"guardians"},
        "attrs": {},
        "parents": []
    },
    {
        "uid":  { "type":"Action", "id":"view"},
        "attrs": {},
        "parents": []
    },
    {
        "uid":  { "type":"ScreenTime", "id":"activity" },
        "attrs": {},
        "parents": []
    }
]
