curl --request GET \
  --url https://api.ppinfra.com/openapi/v1/metrics/gpu/instance \
  --header 'Authorization: <authorization>'

{
  "cpuUtilization": [
    {
      "timestamp": "<string>",
      "value": 123
    }
  ],
  "memUtilization": [
    {
      "timestamp": "<string>",
      "value": 123
    }
  ],
  "rootDiskUtilization": [
    {
      "timestamp": "<string>",
      "value": 123
    }
  ],
  "gpuUtilization": {
    "avg": [
      {
        "timestamp": "<string>",
        "value": 123
      }
    ],
    "gpuIds": [
      {
        "gpuId": "<string>",
        "items": [
          {
            "timestamp": "<string>",
            "value": 123
          }
        ]
      }
    ]
  },
  "gpuMemUtilization": {
    "avg": [
      {
        "timestamp": "<string>",
        "value": 123
      }
    ],
    "gpuIds": [
      {
        "gpuId": "<string>",
        "items": [
          {
            "timestamp": "<string>",
            "value": 123
          }
        ]
      }
    ]
  }
}