1var webhook_json = {
2  url: 'https://f615ef32.ngrok.io',
3  event_types: [{
4    name: 'PAYMENT.SALE.COMPLETED'
5  },{
6    name: 'PAYMENT.SALE.DENIED'
7  }]
8};
9
10paypal.notification.webhook.create(webhook_json, function (error, webhook) {
11  if (error) {
12    console.error(JSON.stringify(error.response));
13    throw error;
14  } else {
15    console.log('Create webhook Response');
16    console.log(webhook);
17  }
18});