Get paginated list of unified payments

{
  "data": [
    {
      "id": "pay_12345",
      "source_system": "stripe",
      "source_system_img_url": "https://cdn.example.com/stripe.png",
      "source_id": "stripe_98765",
      "external_system_provider_id": "provider_001",
      "external_system_config_id": "config_abc",
      "external_system_data": {
        "custom_field": "value"
      },
      "supporting_data_definition_id": "support_001",
      "amount": "12000.00",
      "currency": "USD",
      "status": "COMPLETED",
      "description": "Payment for January invoice",
      "is_primary": true,
      "unified_customer_id": "cust_12345",
      "source_system_customer_id": "ext_cust_67890",
      "local_was_deleted": false,
      "local_was_updated": true,
      "source_data_created_at": "2024-01-01T12:00:00Z",
      "is_active": true
    }
  ],
  "page": 1,
  "limit": 10,
  "totalPages": 5,
  "totalResults": 50
}