Get Signature

curl --request GET \
  --url https://your.service.com/sepa-mandates/{id} \
  --header 'x-api-key: <api-key>'

{
  "status": "OPEN",
  "expiration_date": "2023-12-25",
  "signees": [
    {
      "email": "jsmith@example.com",
      "signature_status": "OPEN"
    }
  ]
}