Output is serialized when there are multiple output columns from dmn

[Michaelli]

I created a simple bpmn flow with one dmn. The input is name. And output is firstname and lastname. I sent a post request from postman, why the output value is a serialized string? Is there a way to make it output like this? “firstname”: {“value”: “firstname”, “type”: “string”}, “lastname”: {“value”: “lastname”, “type”: “string”}