JSON Data to AWS SNS publish

snippet.js

//text, topicArn, and api.aws.sns all defined elsewhere in scope
var apnsMessage = JSON.stringify({
  aps: {
    alert: text,
    extraData: 'thing'
  }
});
var gcmMessage = JSON.stringify({
  data: {
    message: text,
    extraData: 'thing'
  }
});
return api.aws.sns.publishAsync({
  TopicArn: topicArn,
  MessageStructure: 'json',
  //use the AWS SNS console to publish a test message see this format
  Message: JSON.stringify({
    default: text,
    APNS: apnsMessage,
    APNS_SANDBOX: apnsMessage,
    GCM: gcmMessage
  })