How to POST an object to web service using Restkit?
===

This is my object 

    {
        "comment": "hello",
        "created": "2012-07-26",
        "createdBy": "109",
        "email": "cgcgv@jjvfg.hvh",
        "firstName": "Hfhfyf",
        "lastName": "Hvhh",
        "partySize": 3,
        "phoneNumber": "7146739209",
        "time": "04:16:00",
        "usersId": 109,
        "contactPreference2":
        {
            "id": 3,
        },
        "contactPreference1":
        {
            "id": 2,
        },
        "contactPreference3": 
        {
            "id": 4,
        },
        "requestType": 
        {
            "id": 23,
        },
        "reservationsType": 
        {
            "id": 1,
        }

which i want to POST on web service using restkit..
but i'm getting this error
"Unable to find parser for MIME Type 'text/html'"
please help. thank you in advance.