curl --request POST \
  --url https://api.example.com/v1/workflows/{workflow_id}/runs/sync \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "input": {},
  "node_ids": [
    "<string>"
  ],
  "group_id": "<string>"
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "output": {}
}