curl --request GET \
  --url https://meterengine.com/v1/unbilled-events \
  --header 'Authorization: Bearer <token>'

const url = 'https://meterengine.com/v1/unbilled-events';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

{
  "cutoff_at": "2023-11-07T05:31:56Z",
  "future_timestamp": {
    "earliest_occurred_at": "2023-11-07T05:31:56Z",
    "event_count": 123,
    "latest_occurred_at": "2023-11-07T05:31:56Z"
  },
  "month": "<string>",
  "negative_quantity": {
    "billable_metrics": [
      {
        "billable_metric_code": "<string>",
        "event_count": 123
      }
    ],
    "event_count": 123
  },
  "non_numeric_value": {
    "billable_metrics": [
      {
        "billable_metric_code": "<string>",
        "event_count": 123
      }
    ],
    "event_count": 123
  },
  "unmatched_type": {
    "event_count": 123,
    "types": [
      {
        "event_count": 123,
        "type": "<string>"
      }
    ]
  }
}

{
  "code": "validation_error",
  "message": "서버 내부 오류입니다",
  "errors": [
    {
      "field": "event_type",
      "message": "공백일 수 없습니다"
    }
  ]
}

{
  "code": "validation_error",
  "message": "서버 내부 오류입니다",
  "errors": [
    {
      "field": "event_type",
      "message": "공백일 수 없습니다"
    }
  ]
}

{
  "code": "validation_error",
  "message": "서버 내부 오류입니다",
  "errors": [
    {
      "field": "event_type",
      "message": "공백일 수 없습니다"
    }
  ]
}