WRS output is not coming while running in windchill server?

In Thingworx I called getPartStructure WRS from Product Management in odataconnecter by providing inputs id and $expand, i got the output in json format. 

But when iam running the same WRS directly in windchill server by providing inputs CSRF_NONCE, $expand, partid, it is showing error. 

How to see the output directly in windchill server?