WCF Restful service GET/POST

Can I do something like this?

[OperationContract]    
[WebInvoke
  (  
    Method = "POST",
    ResponseFormat = WebMessageFormat.Json,
    RequestFormat = WebMessageFormat.Json,
    BodyStyle = WebMessageBodyStyle.Bare,
    UriTemplate = "/abc{integerParam}"
  )
]
ResultStruct abc( int integerParam, CustomClass secondParam );

Idea here being that I can pass first parameter( integer ) in the url, but secondParam comes from POST. Is this even possible?

I started with WCF REST and not sure about how parameters are assigned. Any pointers will be helpful thank you