curl --request POST \
  --url https://app.pennylane.com/api/external/v2/sepa_mandates \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "bank": "BNP Paribas",
  "bic": "BNPAFRPP",
  "iban": "FR3612739000506556687647Z31",
  "sequence_type": "RCUR",
  "signed_at": "2025-04-24",
  "identifier": "K-02-2025-12345",
  "customer_id": 47334785
}'

{
  "id": 12345,
  "bank": "BNP Paribas",
  "bic": "BNPAFRPP",
  "iban": "FR3612739000506556687647Z31",
  "sequence_type": "RCUR",
  "signed_at": "2025-04-24",
  "identifier": "K-02-2023-12345",
  "customer": {
    "id": 42,
    "url": "https://app.pennylane.com/api/external/v2/customers/42"
  },
  "created_at": "2023-08-07T14:23:12.000Z",
  "updated_at": "2023-08-07T14:23:12.000Z"
}