get message from mandrill inbound

index.js

var talon = require("talon");
var extractSignature = talon.signature.bruteforce.extractSignature;
var planer = require('planer');
const cheerio = require('cheerio')

// https://github.com/PrettyHotProgrammer/mandrill-inbound-parser/blob/master/mandrill-inbound-parser.js
// mandrill_events%3D%5B%7B%22event%22%3A%22inbound
const parse = function(inboundMsg) {
  if (inboundMsg.includes('mandrill_events=%5B%7B%22event%22%3A%22inbound')) {
    return decodeURIComponent(inboundMsg)
      .replace(/\+/g, ' ')
      .replace('mandrill_events=', '');
  }
  return 'Not a valid inbound message from Mandrill';
}

var fs = require('fs');


module.exports = async (req, res) => {
  const body = await text(req)
  const obt = JSON.parse(parse(body))
  // const html = planer.extractFrom(obt[0].msg.html, 'text/html')
  const text2 = planer.extractFrom(obt[0].msg.text, 'text/plain')
  // const text2 = cheerio.load(html).text()
  const result = extractSignature(text2)
  console.log('result', result)
  fs.writeFile('myjsonfile.json', JSON.stringify(obt), 'utf8', () => {
    res.end('Welcome to Micro')
  });
}