PubSub Multiple Users

API
3 
ws.onopen = function (event) {

    var messageListen = {
        type: 'LISTEN',
        data: {
            topics: ['channel-points-channel-v1.<userID>'],
            auth_token: '<token>',
        }
    };

    ws.send(JSON.stringify(messageListen));

    ws.onerror = function (error) {
        console.log('ERR:  ' + JSON.stringify(error) + '\n')
    };
};

Above is my code for example, would I have to do multiple ws.send for multiple users? Or is there a way to combine all the users into a single ws.send ?