curl --request GET \
  --url http://sandbox.mintlify.com/v2/refund/support/chains \
  --header 'X-GatePay-Certificate-ClientId: <x-gatepay-certificate-clientid>' \
  --header 'X-GatePay-Nonce: <x-gatepay-nonce>' \
  --header 'X-GatePay-Signature: <x-gatepay-signature>' \
  --header 'X-GatePay-Timestamp: <x-gatepay-timestamp>'

{
  "code": "000000",
  "data": {
    "currency": "USDT",
    "chains": [
      {
        "chain": "MATIC",
        "currency": "USDT",
        "symbol": null,
        "hasWithdrawMemo": 0,
        "withdrawPercent": "0",
        "withdrawFix": "1",
        "full_curr_type": "",
        "explorer_url": null,
        "show_chain_name_en": "MATIC"
      }
    ]
  },
  "status": "SUCCESS",
  "errorMessage": ""
}