[
  {
    "Messages": null,
    "MetricDataResults": [
      {
        "Id": "a",
        "Messages": [{
          "Code": "Forbidden",
          "Value": "Access denied when getting data - please check that you have the pi:GetResourceMetrics permission"
        }],
        "StatusCode": "Forbidden"
      }
    ],
    "NextToken": null
  }
]