curl --request GET \
  --url https://api.criteo.com/preview/reports/{report-id}/output \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "data": [
      [
        "<unknown>"
      ]
    ],
    "metadata": {
      "columns": [
        {
          "currency": "<string>",
          "deprecated": true,
          "description": "<string>",
          "duration": "<string>",
          "name": "<string>",
          "timezone": "<string>",
          "title": "<string>"
        }
      ],
      "rows": 123
    }
  }
}