fabcar > enrollAdmin.js

return fabric_ca_client.enroll({
  enrollmentID: 'admin',
  enrollmentSecret: 'adminpw'
}).then((enrollment) => {
  console.log('Successfully enrolled admin user "admin"');
  return fabric_client.createUser(
      {username: 'admin',
          mspid: 'Org1MSP',
          cryptoContent: { privateKeyPEM: enrollment.key.toBytes(), signedCertPEM: enrollment.certificate }
      });
}).then((user) => {
  admin_user = user;
  return fabric_client.setUserContext(admin_user);
}).catch((err) => {
  console.error('Failed to enroll and persist admin. Error: ' + err.stack ? err.stack : err);
  throw new Error('Failed to enroll admin');
});