{
    "policy": {
        "blob": {
            "foobar_user": [
                "role:compute-user"
            ]
        },
        "id": "717273",
        "links": {
            "self": "http://example.com/identity/v3/policies/717273"
        },
        "project_id": "456789",
        "type": "application/json",
        "user_id": "616263"
    }
}
