const express = require('express');
  const bodyParser = require('body-parser');  // Optional.
  const logentriesWebhookAuth = require('logentries-webhook-auth');
  
  const app = express();

  // This step isn't necessary for authentication, but you'll want it 
  // if you want to parse the payload that LogEntries posts.
  app.use(bodyParser.urlencoded({
    extended: true
  }));

  // Use the middleware with a pre shared password.
  app.use(logentriesWebhookAuth('password'));

  // "user" is now available on request.logentriesWebhookAuth.user
  // "payload" is now available on request.body

  // ...Your routes here...

  app.listen(3000);