curl --request POST \
  --url https://partner-card.test.public.rockerapi.dev/api/engagements/card/{engagement-id}/sepa-direct-debit/register \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "iban": "DE89370400440532013000",
  "consentId": "a70582ef-fed1-4a9a-8b48-1e1a76e7472d"
}
'

{
  "mandateId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}