curl --request POST \
  --url https://catchall.newscatcherapi.com/catchAll/datasets/{dataset_id}/upload \
  --header 'Content-Type: multipart/form-data' \
  --header 'x-api-key: <api-key>' \
  --form file='@example-file'

{
  "dataset_id": "ccabb755-afc2-4047-b84c-78d1f23d49b2",
  "entities_created": 3,
  "validation_report": {
    "total_rows": 3,
    "valid_rows": 3,
    "skipped_count": 0,
    "skipped_rows": []
  }
}