Create SOAP request using KSOAP Android

I need to generate a soap request like this one.

SOAP-REQUEST

POST /TennisMasters/TennisMasters.Listener.asmx HTTP/1.1
Host: playinkstudio.com
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://playinktennismasters.com/authenticateUser"

    <?xml version="1.0" encoding="utf-8"?>
    <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
      <soap:Body>
        <authenticateUser xmlns="http://playinktennismasters.com/">
          <user>string</user>
        </authenticateUser>
      </soap:Body>
    </soap:Envelope>

I am using KSOAP2, to build this request.

private static String SOAP_ACTION = "http://playinktennismasters.com/authenticateUser";
private static String NAMESPACE = "http://playinktennismasters.com/";
private static String METHOD_NAME = "authenticateUser";
private static String URL = "http://playinkstudio.com/TennisMasters/TennisMasters.Listener.asmx";

    SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
    request.addProperty("user", "A Json String will be here");

    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
            SoapEnvelope.VER12);
    envelope.dotNet = true;
    envelope.setOutputSoapObject(request);
    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
    androidHttpTransport.debug = true;
    try {
        androidHttpTransport.call(SOAP_ACTION, envelope);
    } catch (Exception e) {
        e.printStackTrace();
    }

This is the request which I got from debugging.

<v:Envelope xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns:d="http://www.w3.org/2001/XMLSchema" xmlns:c="http://www.w3.org/2003/05/soap-encoding" xmlns:v="http://www.w3.org/2003/05/soap-envelope">
<v:Header />
<v:Body>
<authenticateUser xmlns="http://playinktennismasters.com/" **id="o0" c:root="1"**>
<user **i:type="d:string"**>{"email":"asad.mahmood@gmail.com","UserDate":"Feb 22, 2012 7:01:24 PM","GearId":0,"GearValue":0,"Income":0,"Level":0,"MatchResult":0,"MatchType":0,"OfferId":0,"OpponentId":0,"Partners":0,"ExhibitionCount":0,"PowerRuns":0,"PowerServes":0,"PowerShots":0,"Seeds":0,"Energy":0,"Cash":0,"Stamina":0,"Strength":0,"SubLevel":0,"TotalEnergy":0,"TotalStamina":0,"TrainingId":0,"Agility":0,"UserId":0,"Age":0,"ActivityId":0,"gearIsGift":0}</user>
</authenticateUser>
</v:Body>
</v:Envelope>

I don't know why extra attributes like "id" and "c:root" are being added in authenticateUser. and extra attribute in i:type="d:String". Please can come someone give me a good example or tutorial which can guide me to create a request like above,Really Need help thanks.

Finally got it working with KSOAP. Here is the code I used maybe it will help someone.

final SoapObject request = new SoapObject(AppConsts.NAMESPACE,
                usecaseString);
        request.addProperty(addPropertyString, propertyJsonString);
        final SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
                SoapEnvelope.VER11);
        envelope.dotNet = true;
        envelope.setOutputSoapObject(request);
        final HttpTransportSE androidHttpTransport = new HttpTransportSE(
                AppConsts.URL);
        androidHttpTransport.debug = true;
        String soapAction = AppConsts.NAMESPACE + usecaseString;

        try {
            androidHttpTransport.call(soapAction, envelope);
            SoapPrimitive resultSoapPrimitive;
            resultSoapPrimitive = (SoapPrimitive) envelope.getResponse();
            if (resultSoapPrimitive != null) {
                result = resultSoapPrimitive.toString();
                if (AppConsts.ENABLE_LOG)
                    Log.d(AppConsts.GAME_TITLE, "result json : " + result);
            } else {
                if (AppConsts.ENABLE_LOG)
                    Log.d(AppConsts.GAME_TITLE, "result json is NULL!!! ");

            }
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("static", "Exception in making call to server");
        }

For creating above request these three parameter we need to pass into code.

 AppConsts.NAMESPACE =  "http://playinktennismasters.com"
usecaseString = "authenticateUser"
addPropertyString = "user"