Renew a subscription

{
"promotionSource": "WMON18",
"offerCode": "WM18B",
"publication": "00001400",
"quantity": 1,
"customerPurchaseOrderNumber": "123",
"customerPurchaseOrderType": "I",
"customerPurchaseOrderDate": "2021-01-19",
"validFrom": "2021-02-24",
"paymentMethod": "E",
"debitAccounts": [
{
"debitAccountId": "0002",
"debitBankCode": "20811008",
"debitCountryCode": "GB",
"debitAccountNumber": "1039531801",
"debitAccountHolder": "AVogt",
"debitContinuous": true,
"iban": "DE27100777770209299700",
"bic": "GENODEF1NEA"
}
],
"inputOffice": "IMM-INPUT",
"inputDate": "2021-01-15",
"inputUser": "SYS-RFC",
"externalOrderNumber": "123456",
"saveInSystem": true,
"postAtOnce": true,
"subscriptionRenewal": {
"renewalOrderNumber": "4011800986",
"automaticRenewal": true
},
"bpRelations": [
{
"role": "AG",
"bp": {
"bpNumber": "1012035945"
}}
]
}