JSV Format Support

Is the JSV Format supported in SoapUI Pro 5.0?
If so please direct to documentation to help facilitate how to use it.

The following POST example does not work throwing an exception.
Using Headers:
Content-type application/jsv (have attempted text/jsv with no success)
Accept application/jsv (have attempted text/jsv with no success)

{
User:
{
StoreId: 37777,
UserName: IronMan,
Password: fin09,
Role: SalesPerson,
FirstName: Alan,
LastName: Paa,
EmailAddress: alan.paa@prog.com,
PhoneNumber: 8017896787,
IsOnlineDocsViewable: false,
IsPasswordResetRequired: false,
IsDeliveryDateEditable: false,
IsActive: false,
AdditionalAccessibleStores: [0]
}
}

Exception:

<data contentType="application/jsv" contentLength="330"><![CDATA[{ResponseStatus:{ErrorCode:RequestBindingException,Message:Unable to bind request,StackTrace:" at ServiceStack.WebHost.Endpoints.RestHandler.GetRequest(IHttpRequest httpReq, IRestPath restPath)
at ServiceStack.WebHost.Endpoints.RestHandler.ProcessRequest(IHttpRequest httpReq, IHttpResponse httpRes, String operationName)"}}]]></data>