curl --request GET \
  --url https://api.example.com/api/payments/razorpay/{environment}/customers \
  --header 'Authorization: Bearer <token>'

{
  "customers": [
    {
      "providerCustomerId": "cus_123",
      "email": "buyer@example.com",
      "name": "Buyer Example",
      "phone": "+1 555-0100",
      "deleted": true,
      "metadata": {},
      "providerCreatedAt": "2023-11-07T05:31:56Z",
      "syncedAt": "2023-11-07T05:31:56Z",
      "paymentsCount": 1,
      "lastPaymentAt": "2023-11-07T05:31:56Z",
      "totalSpend": 1,
      "totalSpendCurrency": "<string>",
      "paymentMethodBrand": "<string>",
      "paymentMethodLast4": "<string>",
      "countryCode": "<string>"
    }
  ]
}