gcmtest.js

var request = require('request');

var apiKey = "API_KEY";
var regId = "REG_ID";

var args = process.argv.slice(2);

if (args[0] == 'show_offers') {
  var data = {
    id: Math.floor(Date.now() / 1000),
    type: "show_offers",
    title: "PaySense",
    text: "You have offers waiting. Check them now!"
  };
} else if (args[0] == 'create_loan') {
  var data = {
    id: Math.floor(Date.now() / 1000),
    type: "create_loan",
    title: "PaySense",
    text: "Do you want to EMI your transaction?"
  };
} else {
  var data = {
    id: Math.floor(Date.now() / 1000),
    title: "PaySense",
    text: "Your application has been approved."
  };
}

var requestData = {
  data: data,
  registration_ids: [regId]
}

console.log(JSON.stringify(requestData));
request({
  url: 'https://android.googleapis.com/gcm/send',
  method: 'POST',
  headers: {
    'Authorization': 'key=' + apiKey,
    'Content-Type': 'application/json'
  },
  json: requestData
}, function (error, response, body) {
  if (error) {
    console.log(error);
  } else if (response.statusCode != 200) {
    console.log(response.statusCode, body);
  } else {
    console.log(body);
  }
});