HTTP Request formatting

Good morning guys,

I am trying to send a message from the simulator to a website, but there is something wrong in the message preventing the website from working and I cannot figure out what it is. This is the CURL equivalent of what I need to send that is tested and works:

curl -X "POST" -H "Content-Type: application/json" -H "x-master: \$2b\$08\$zI0DtY40FP6niScxucAxc.googlywoogly" --data '{"username":"socrates", "password":"123"}' https://madeup.com/api/createuser

And my app

function createUser() {

    var url = "">madeup.com/.../createuser";

    var params = {
         "username" => "fiddy",
         "password" => "fiddy"
    };

    var options = {
          :method => Communications.HTTP_REQUEST_METHOD_POST,
          :headers =>{
               "Content-Type" => Communications.REQUEST_CONTENT_TYPE_JSON,
               "x-master-token"=> "$2b$08$zI0DtY40FP6niScxucAxc.googlywoogly"
          },
    };

    var responseCallback = method(:onReceive);

    Communications.makeWebRequest(url, params, options, responseCallback);
}

Any ideas what is wrong?