curl --request PUT \
  --url https://api.hubapi.com/automation/actions/2026-03/{appId}/{definitionId}/functions/{functionType}/{functionId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: text/plain' \
  --data '<string>'

{
  "functionType": "POST_ACTION_EXECUTION",
  "id": "<string>"
}