curl --request GET \
  --url https://api.app.lastaccountingcompany.com/portal/invoices \
  --header 'Authorization: Bearer <token>'

{
  "customer_id": "<string>",
  "invoices": [
    {
      "id": "<string>",
      "status": "<string>",
      "delivery_channel": "<string>",
      "customer": {
        "name": "<string>",
        "id": "<string>",
        "business_id": "<string>",
        "vat_number": "<string>",
        "address_line1": "<string>",
        "postal_code": "<string>",
        "city": "<string>",
        "country_code": "<string>",
        "email": "<string>",
        "einvoice_address": "<string>",
        "einvoice_operator": "<string>",
        "default_payment_terms_days": 123,
        "default_vat_code": "<string>",
        "default_vat_rate_basis_points": 123,
        "default_invoice_language": "<string>"
      },
      "lines": [
        {
          "description": "<string>",
          "quantity": "<string>",
          "unit_price_cents": 123,
          "net_cents": 123,
          "vat_cents": 123,
          "gross_cents": 123,
          "vat_rate_basis_points": 123,
          "vat_code": "<string>"
        }
      ]
    }
  ]
}