Calling AEM Forms JEE RESTful from SoapUI

Using SoapUI to call an AEM JEE process using REST/JSON.   Process is enabled for REST.  

On running through SoapUI it comes back with HTTP 200...however it looks like my json variables are not being picked up in Adobe.  Using the VariableLogger in workbench shows that my expected variables are empty.  

JSON

{

variable: "test"

variable1: "this is a test"

}

Any idea how to successfully pass these to AEM?

Thanks.