[
    {
        "uid": {  "type":"User", "id":"bob" },
        "attrs": {
            "score": { "__extn": { "fn": "decimal", "arg": "0.899" }}
        },
        "parents": []
    },
    {
        "uid":  { "type":"Action", "id":"view" },
        "attrs": {},
        "parents": []
    },
    {
        "uid":  { "type":"Photo", "id":"VacationPhoto94.jpg" },
        "attrs": {
            "owner": { "__entity": { "type":"User", "id":"bob"} }
        },
        "parents": []
    }
]