curl --request PATCH \
  --url https://api.spacebring.com/billing/credit_notes/v1/{id} \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "creditNote": {
    "internalNote": "<string>"
  }
}
'

{
  "message": "<string>",
  "type": "<string>"
}