JSON.stringify with non-alphabetical order

[A Former User]

Hi,
I try to use websockets with json and I got a problem:

I make a json string with JSON.stringify(); but it's changing my object order
Is there a possible way to change this

what I do (in my QML):
socket_api is a Websocket component (QML)

    /**
      This is what I call every time we need to send data
      Client -> Server
      note: use a debug pass/user pair here
    */
    function requestAPI(func, args){
        var user_name = "admin"
        var user_password = "Hunter2"

        var userCredential = {username:user_name, password:user_password};
        var userCredentials_json = JSON.stringify(userCredential.toString());
        console.log("credentuals string: "+ userCredentials_json);


        var requestedArguments = {};

        var functionToRequest = { funcName: "pong", arguments: requestedArguments};
        var functionToRequest_json = JSON.stringify(functionToRequest);

        var myRequest = {credentials: userCredential, func:functionToRequest};
        var myRequest_json = JSON.stringify(myRequest);

        console.log(myRequest_json)
        socket_api.sendTextMessage(myRequest_json);
    }

with this i get:

qml: {"credentials":{"password":"Hunter2","username":"admin"},"func":{"arguments":{},"funcName":"pong"}}

wich isn't original's order.

Is there a way to fix that?

Thanks in advance!