app.get('/subscribe-twitter-webhooks', (req, res) => {
        // twitter authentication
        var twitter_oauth = {
            consumer_key: 'CONSUMER_KEY',
            consumer_secret: 'CONSUMER_SECRET',
            token: 'ACCESS_TOKEN',
            token_secret: 'TOKEN_SECRET'
        };

        var WEBHOOK_URL = 'https://api.mydomain.com/twitter/webhooks';

        // request options
        var request_options = {
            url: 'https://api.twitter.com/1.1/account_activity/webhooks.json',
            oauth: twitter_oauth,
            headers: {
                'Content-type': 'application/x-www-form-urlencoded'
            },
            form: {
                url: WEBHOOK_URL
            }
        }
        // POST request to create webhook config
        request.post(request_options, function (error, response, body) {
            console.log('--er--', error)
            console.log('--body--', body)
        });
    });