Retrieve a Sub-merchant

Send GET /onboarding/v1/sub-merchants/{subMerchantId} with merchantId in the request header.

The response contains id, status, name, email, iban, address, gsmNumber, taxOffice, taxNumber, contactName, contactSurname, identityNumber, legalCompanyTitle, subMerchantExternalId, balanceAmount, refundableBalanceAmount, and subMerchantType.