Backslash escaping issue in AI generated answers [closed]

So, there is a websocket server (game) and requires socket.io messages like this: 42["game:chat-public:msg","{\"id\":\"2qxgs2\",\"pId\":\"nfityk\",\"msg\":\"example\",\"date\":1764384827484}"]. As you see, it's an array but second part of array is backslash escaped json. No direct json allowed in the game.

So i made this to handle it:

            const messagePayloadObj = {
                msg: msg,
                pId: createRandomId()
            };
            // JSON string
            const messagePayloadString = JSON.stringify(messagePayloadObj);

            // ESCAPED (Socket.IO expected format)
            const escaped = `"${messagePayloadString.replace(/"/g, '\\"')}"`;
            if(w.readyState === WebSocket.OPEN){
                w.send(`42["game:chat-public:msg",${escaped}]`)
            }

It's all okay but some messages that i want to send are ai generated answers and you know, ai answers has backslashes, new line characters etc. (\n). So it's not working in ai generated messages because sent like a string.

How to escape all backslashes includes AI?