curl --request POST \
  --url https://api.rek.la/external-api/publications/cancel \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <x-api-key>' \
  --header 'X-Partner-Id: <x-partner-id>' \
  --data '
{
  "publication_id": 11607,
  "channel_id": -1001568992973
}
'