To override the Content-type in your clients HTTP Accept Header, append  the .json suffix or  ?format=json
To embed the response in a jsonp callback, append ?callback=myCallback
        
        HTTP + JSON
         The following are sample HTTP requests and responses. 
            The placeholders shown need to be replaced with actual values.
POST /json/reply/UserRequest HTTP/1.1 
Host: scanning.modernekonomi.se 
Content-Type: application/json
Content-Length: length
{"Email":"String","FirstName":"String","LastName":"String"}
 
HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: length
{"User":{"Id":0,"UserName":"String","FullName":"String","UniqueId":"00000000-0000-0000-0000-000000000000","Email":"String"}}