Is there a way to mock JSON data as a input parameter with datattype object with Rhino mock?

I am a new bee to rhino mock, Please bare with question. On unit testing a method in vs2012, I have a huge JSON data that will be passed as argument to a method. I am using Rhino mock for this purpose.

After so many tries and searching for an example on mocking JSON object as input parameter for a method, i could not figure it out.

Please suggest the way to play around with JSON data with rhino mock.