curl --request POST \
  --url https://api-lr.agent.ai/v1/action/file_converter_watermark_action \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "input_file_url": "<string>",
  "input_format": "pdf",
  "text": "<string>",
  "output_variable_name": "watermarked_file"
}
'

{
  "status": 123,
  "response": {}
}