curl --request GET \
  --url https://openplatform.gateapi.io/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>'

{
  "status": "SUCCESS",
  "code": "000000",
  "errorMessage": "",
  "data": {
    "currency": "USDT",
    "chains": [
      {
        "chain": "ETH",
        "currency": "USDT",
        "full_curr_type": "USDT_ETH",
        "symbol": "USDT",
        "explorer_url": "https://etherscan.io",
        "show_chain_name_en": "Ethereum",
        "hasWithdrawMemo": 0,
        "withdrawPercent": 0.001,
        "withdrawFix": "0"
      },
      {
        "chain": "BSC",
        "currency": "USDT",
        "full_curr_type": "USDT_BSC",
        "symbol": "USDT",
        "explorer_url": "https://bscscan.com",
        "show_chain_name_en": "BNB Smart Chain",
        "hasWithdrawMemo": 0,
        "withdrawPercent": 0.001,
        "withdrawFix": "0"
      }
    ]
  }
}