curl --request POST \
  --url https://api.example.com/api/playground/sessions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "source": "local",
  "source_ref": "<string>",
  "huggingface_dataset_id": "<string>",
  "huggingface_token": "<string>",
  "huggingface_split": "train",
  "huggingface_subset": "<string>",
  "github_url": "<string>",
  "github_token": "<string>",
  "kaggle_url": "<string>",
  "kaggle_username": "<string>",
  "kaggle_key": "<string>"
}
'

{
  "id": "<string>",
  "name": "<string>",
  "source": "<string>",
  "status": "<string>",
  "progress": 123,
  "created_at": "<string>",
  "updated_at": "<string>",
  "source_ref": "<string>",
  "row_count": 123,
  "column_count": 123,
  "columns": [],
  "file_size_bytes": 123,
  "file_names": [
    "<string>"
  ],
  "error_message": "<string>",
  "cancel_requested": false
}