{
    "attr1": 12345,
    "attr2": "a string",
    "attr3": {
        "class": "Time",
        "val": 1234567.7777
    }
}


{
    "attr1": 12345,
    "attr2": "a string",
  "attr3/Time": 1234567.7777,
    "attr4/Foo::Bar": {
        "a": "xyz"
    }
}