curl --request DELETE \
  --url https://api-v2.watchcollect.com/v2/outbound/drafts/{draft_id} \
  --header 'Authorization: Bearer <token>'

{
  "error": {
    "code": "invalid_payload",
    "message": "event is required",
    "request_id": "018f06e2-4f8d-7c01-8a0d-cc6fd78f7001"
  }
}