curl --request GET \
  --url https://api.veryfront.com/account/upcoming-invoices \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "number": "<string>",
      "status": "<string>",
      "description": "<string>",
      "amount_due": 123,
      "amount_paid": 123,
      "currency": "<string>",
      "issued_at": "<string>",
      "hosted_invoice_url": "<string>",
      "pdf_url": "<string>",
      "amount_total": 123,
      "applied_balance_amount": 123,
      "proration_amount": 123,
      "recurring_amount": 123
    }
  ]
}