curl --request POST \
  --url https://api.sand.getivy.de/api/service/mandate/revoke \
  --header 'Content-Type: application/json' \
  --header 'X-Ivy-Api-Key: <api-key>' \
  --data '{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}'

{
  "success": true
}