var notificationValue= {"applicationId":"32769","schemaId":"32778","topicId":"32770","type":"USER"};
var file = 'notification.json';
var opts = {
  url: 'http://localhost:8080/kaaAdmin/rest/api/sendNotification',
  method: 'POST',
  auth: { user: 'devuser', password: 'devuser123' },
  json: true,
  formData: {
             notification: JSON.stringify(notificationValue),
             file : fs.readFileSync(file)
   }

};
request(opts, function(err, resp, body) {
    if(err)
        res.send(err);
    else{
        res.send(body);
    }
});