{
  "id": "<string>",
  "object": "invoice",
  "subscription_id": "<string>",
  "customer": "<string>",
  "amount_due": 123,
  "amount_paid": 123,
  "amount_remaining": 123,
  "currency": "<string>",
  "status": "open",
  "payment_status": "pending",
  "billing_reason": "<string>",
  "period_start": 123,
  "period_end": 123,
  "created": 123,
  "frequency": "<string>",
  "recurring_interval": "day",
  "recurring_interval_count": 123,
  "payment_id": "<string>",
  "paid_at": 123,
  "due_date": 123
}