curl --request GET \
  --url https://sandbox.api.acountpay.com/v1/partner/merchants \
  --header 'X-Partner-Client-Id: <api-key>' \
  --header 'X-Partner-Client-Secret: <api-key>'

{
  "merchants": [
    {
      "id": 42,
      "clientId": "a1b2c3d4-e5f6-7890-abcd-1234567890ab",
      "companyName": "Restaurant XYZ ApS",
      "contactEmail": "owner@restaurantxyz.dk",
      "contactPhone": "+4587654321",
      "status": "active",
      "partnerRefId": "merchant-001",
      "createdAt": "2023-11-07T05:31:56Z"
    }
  ],
  "total": 15,
  "page": 1,
  "limit": 20
}