Is it possible to use a Field as a Serializer?

[Kangaroux]

Use case: I have an object which is represented as a dict, and the dict keys are dynamic. Thus, I can't simply create a serializer with each key as a field like you normally would. Instead my "serializer" is a DictField and I'm validating the keys.

My problem is that I can't use a Field as a Serializer. A Serializer is a Field but not the other way around. I can of course create a serializer that just contains this custom DictField, but this seems slightly roundabout. I'm adding an unnecessary extra layer to my object by doing it this way.

{
    "data": {
        "a": [],
        "b": [],
        "c": []
    }
}

vs.

{
    "a": [],
    "b": [],
    "c": []
}

Is there a way to declare a serializer which uses a field as itself, or do I need to add a dummy field?