curl --request POST \
  --url 'https://api.example.com/experiments/{experiment_id}/metrics?HAIQU_API_KEY=' \
  --header 'Content-Type: application/json' \
  --data '{
  "metrics": {}
}'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}