curl --request POST \
  --url https://api.gbase.ai/pdf/highlight \
  --header 'Content-Type: application/json' \
  --data '
{
  "file_id": "<string>",
  "text": "<string>",
  "page": 123
}
'

{
  "positions": [],
  "success": true,
  "message": "<string>"
}