curl --request GET \
  --url https://api.getfernand.com/organization/invoices \
  --header 'X-API-Key: <api-key>'

{
  "invoices": [
    {
      "id": "in_1A2B3C4D5E6F7G8H",
      "amount": 4900,
      "url": "https://pay.stripe.com/invoice/...",
      "reference": "ABC-1234",
      "members": 5,
      "paid": "2025-01-15T10:30:00+00:00"
    }
  ],
  "details": {
    "name": "Early Adopter Discount",
    "offer": 1000
  }
}