I would like to test the response of some webservice with soapUI Free editions . For the following j

I would like to test the response of some webservice with soapUI Free editions . For the following json response i would like to capture these assertions { "data": {something}, "error_details": { "message": "" }, "status": 200, "success": true } how can I test these assertions 1) Ensure key are present in response structure : data, errordetails, message,status and success keys 2) Ensure Key values are captured correctly. IF partyID changes how can we make expected results to match the actual results