415 Unsupported Media Type Calling WCF Service from $.ajax
===

I am attempting to call a WCF web service from an ASPX page like so:

    var payload = {
        applicationKey: 40868578
    };

    $.ajax({
        url: "/Services/AjaxSupportService.svc/ReNotify",
        type: "POST",
        data: JSON.stringify(payload),
        contentType: "application/json",
        dataType: "json"
    });

Doing so results in the web server returning the error `415 Unsupported Media Type`. I'm sure this is a configuration issue with the WCF service which is defined as follows:

    [OperationContract]
    [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json)]
    void ReNotify(int applicationKey);

There are no entries in the `web.config` file so assume that the service uses the default configuration.