jwt.js

const jwt = require('jsonwebtoken');
var token = jwt.sign({
  external: true,
  form: {
    _id: '59795d259be16e3ee58fddaa',
  },
  project: {
    _id: '59795d259be16e3ee58fdda6'
  },
  user: {
    _id: 'external',
    data: {
      name: 'joe'
    },
    roles: [
      '59795d259be16e3ee58fdda7'
    ]
  }
}, 'JWT_SECRET');
console.log(token);

jwt.verify(token, 'JWT_SECRET', (err, decoded) => {
  if (err) {
      console.log(err);
      return;
  }

  console.log('login success!');
  console.log(decoded);
});