curl --request DELETE \
  --url https://api.kajabi.com/v1/contact_notes/{id} \
  --header 'Authorization: Bearer <token>'

{
  "errors": [
    {
      "status": "<string>",
      "source": {
        "pointer": "<string>"
      },
      "title": "<string>",
      "detail": "<string>"
    }
  ]
}