curl --request GET \
  --url https://api.olostep.com/v1/files/{file_id}/content \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "object": "<string>",
  "created": 123,
  "filename": "<string>",
  "bytes": 123,
  "download_url": "<string>",
  "expires_in": 123
}