curl --request GET \
  --url https://app.flowglad.com/api/v1/invoice-line-items \
  --header 'Authorization: <api-key>'

{
  "data": [
    {
      "id": "<string>",
      "createdAt": 0,
      "updatedAt": 0,
      "livemode": true,
      "invoiceId": "<string>",
      "quantity": -1,
      "priceId": "<string>",
      "description": "<string>",
      "price": -1,
      "type": "<string>",
      "ledgerAccountId": null,
      "ledgerAccountCredit": null
    }
  ],
  "currentCursor": "<string>",
  "nextCursor": "<string>",
  "hasMore": true,
  "total": 123
}