Example payload

{
  "data": {
    "created_by": {
      "first_name": "Shwan",
      "last_name": "Ippotle",
      "username": "shippotle@shippo.com"
    },
    "label_file_type": "PDF_4x6",
    "label_url": "https://shippo-delivery.s3.amazonaws.com/70ae8117ee1749e393f249d5b77c45e0.pdf?Signature=vDw1ltcyGveVR1OQoUDdzC43BY8%3D&Expires=1437093830&AWSAccessKeyId=AKIAJTHP3LLFMYAWALIA",
    "messages": [
      {
        "source": "UPS",
        "code": "carrier_timeout",
        "text": "UPS API did not respond. Please try again in a few minutes."
      }
    ],
    "object_id": "915d94940ea54c3a80cbfa328722f5a1",
    "object_owner": "shippotle@shippo.com",
    "parcel": "e94c7fdfdc7b495dbb390a28d929d90a",
    "qr_code_url": "https://shippo-delivery.s3.amazonaws.com/96_qr_code.pdf?Signature=PEdWrp0mFWAGwJp7FW3b%2FeA2eyY%3D&Expires=1385930652&AWSAccessKeyId=AKIAJTHP3LLFMYAWALIA",
    "rate": {
      "amount": "5.5",
      "amount_local": "5.5",
      "currency": "USD",
      "currency_local": "USD",
      "object_id": "adcfdddf8ec64b84ad22772bce3ea37a",
      "provider": "USPS",
      "carrier_account": "078870331023437cb917f5187429b093",
      "servicelevel_name": "Priority Mail",
      "servicelevel_token": "fedex_ground"
    },
    "status": "SUCCESS",
    "tracking_number": "9499907123456123456781",
    "tracking_status": "DELIVERED",
    "tracking_url_provider": "https://tools.usps.com/go/TrackConfirmAction_input?origTrackNum=9499907123456123456781"
  }
}