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

{
  "data": [
    {
      "id": "<string>",
      "createdAt": 0,
      "updatedAt": 0,
      "livemode": true,
      "organizationId": "<string>",
      "name": "<string>",
      "code": "<string>",
      "amount": 123,
      "amountType": "percent",
      "active": true,
      "duration": "<string>",
      "numberOfPayments": null
    }
  ],
  "currentCursor": "<string>",
  "nextCursor": "<string>",
  "hasMore": true,
  "total": 123
}