curl --request GET \
  --url https://api.example.com/api/files/{file_id}/content \
  --header 'Authorization-PSK: <api-key>'

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