curl --request DELETE \
  --url https://api.iklim.co/v1/alarms/forecasts/unregister/{registrationId}

{
  "timestamp": "YYYY-mm-DDTHH:MM:SS.nnnnnnnnn",
  "status": "XXX",
  "error": "Error Name",
  "message": "Error Message",
  "path": "/endpoint/uri/here",
  "messages": [
    "<string>"
  ]
}