Live Chat with Laravel, Redis and Socket.IO

I am trying to create a real time live chat with Laravel 5.1 (I am using AsgardCMS), Redis and Socket.IO. My logic is when a guest user opens the chat window to fire an event to a specific operator user. To do so I am broadcasting the event to a channel (channel-name)+(operator id), because I want to show a notification to a specific operator, who is logged in the backend of the website. What I find difficult is how to get the id of the operator in the server side code for Redis, which is listening for events. This is the code:

var server = require('http').Server();

var io = require('socket.io')(server);

var Redis = require('ioredis');
var redis = new Redis();

redis.subscribe('asgardcms.notifications.3');

redis.on('message', function(channel, message) {
    console.log(channel, message);
    message = JSON.parse(message);

    io.emit(channel + ':' + message.event, message.data);

});

io.sockets.on('connection', function (socket){
    // console.log(socket);
});

server.listen(3000);

Here I have hardcoded 3 in the name of the channel but I want this value to change so I can notify a certain operator.

via Chebli Mohamed