create webhook with node.js

post_webhook.js

var request = require('superagent');
var jwt = require('jsonwebtoken');
var USER_ID = 'appUser _id';
var KEY_ID = 'your_key_id';
var SECRET = 'your_secret';
var token = jwt.sign({
    scope: 'app'
},
SECRET,
{
 headers: {
     kid: KEY_ID
 }
});

request
 .post('https://api.smooch.io/v1/webhooks')
 .send({target: 'http://example.com/callback'})
 .set('authorization', 'Bearer ' + token)
 .set('Accept', 'application/json')
 .set('content-type', 'application/json')
 .end(function(err, res) {
     console.log(err, res.body, res.statusCode);
 });