{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "HistoryEvent",
  "example": {
    "timestamp": null,
    "type": null,
    "id": null,
    "previousEventId": null,
    "activityFailedEventDetails": {
      "error": null,
      "cause": null
    },
    "activityScheduleFailedEventDetails": null
  }
}