Get Aggregated Webhook Event Count

[
  {
    "period_start": "2019-08-24T14:15:22Z",
    "number_of_events": 0,
    "status": "IN_PROGRESS",
    "webhook_id": 0,
    "number_of_executions": 0
  }
]

{
  "request_id": null,
  "error": {
    "code": "E-001",
    "title": "Not allowed exception",
    "description": "string"
  }
}

{
  "request_id": null,
  "error": {
    "code": "E-001",
    "title": "Not allowed exception",
    "description": "string"
  }
}

{
  "request_id": null,
  "error": {
    "code": "E-001",
    "title": "Not allowed exception",
    "description": "string"
  }
}

{
  "request_id": null,
  "error": {
    "code": "E-001",
    "title": "Not allowed exception",
    "description": "string"
  }
}