GET - https://subscribercrmapi.oss.org.uk/api/payment/contact/{contactId}

Lists all Payments for a contact.

[
{
"Id": 1,
"ContactId": 1234,
"DemandId": 567,
"Amount": 50.0,
"TransactionDate": "2026-03-22T00:00:00+00:00",
"Comments": "ABC123",
"PaymentMethodId": 1
},
{
"Id": 2,
"ContactId": 1234,
"DemandId": 567,
"Amount": 50.0,
"TransactionDate": "2026-04-22T00:00:00+00:00",
"Comments": "ABC123",
"PaymentMethodId": 1
},
{
"Id": 3,
"ContactId": 1234,
"DemandId": 567,
"Amount": 50.0,
"TransactionDate": "2026-05-22T00:00:00+00:00",
"Comments": "ABC123",
"PaymentMethodId": 1
}
]