send-notification.js

const webpush = require('web-push');

const pushSubscription = {
  endpoint: '< Push Subscription URL >',
  keys: {
    p256dh: '< User Public Encryption Key >',
    auth: '< User Auth Secret >'
  }
};

const payload = {
  title: 'Título da notificação',
  body: 'Corpo da notificação',
  icon: 'https://cdn3.iconfinder.com/data/icons/business-avatar-1/512/8_avatar-256.png',
  vibrate: [100, 50, 100],
  data: {
    dateOfArrival: Date.now(),
    primaryKey: 1
  }
};

webpush.sendNotification(pushSubscription, payload);