curl --request POST \
  --url https://api.trymaitai.ai/api/v1/test-sets/convert-to-workflow \
  --header 'Content-Type: application/json' \
  --header 'X-Maitai-Api-Key: <api-key>' \
  --data '
{
  "source_test_set_id": 15,
  "workflow_id": 42,
  "new_test_set_name": "HS Classification Workflow Holdout"
}
'

{
  "data": {
    "id": 16,
    "name": "HS Classification Workflow Holdout",
    "workflow_id": 42
  }
}