def METHOD_NAME(numpy_array_integer, numpy_array_float, numpy_array_bool):
    nested_dict_with_array_as_values = dict(
        boolean=numpy_array_bool,
        nested=dict(
            int=numpy_array_integer, float=numpy_array_float, double_nested=dict(extra=numpy_array_integer * 2)
        ),
    )
    json.dumps(nested_dict_with_array_as_values, cls=SIJsonEncoder)