{
  "event": "issue_impact_change",
  "payload_type": "issue",
  "payload": {
    "display_id": 123 ,
    "title": "Issue Title" ,
    "method": "methodName of issue",
    "impact_level": 2,
    "crashes_count": 54,
    "impacted_devices_count": 16,
    "url": "http://crashlytics.com/full/url/to/issue"
  }
}
