curl --request GET \
  --url https://openplatform.gateapi.io/merchant/open/institution/v1/pay/fixedaddress/chains \
  --header 'X-GatePay-Certificate-ClientId: <x-gatepay-certificate-clientid>' \
  --header 'X-GatePay-Nonce: <x-gatepay-nonce>' \
  --header 'X-GatePay-On-Behalf-Of: <x-gatepay-on-behalf-of>' \
  --header 'X-GatePay-Signature: <x-gatepay-signature>' \
  --header 'X-GatePay-Timestamp: <x-gatepay-timestamp>'

{
  "status": "SUCCESS",
  "code": "000000",
  "errorMessage": "",
  "data": {
    "Chains": [
      {
        "chain": "ETH",
        "showChainNameEn": "ETH/ERC20",
        "currencies": [
          "USDT",
          "DAI",
          "ETH",
          "MATIC",
          "USDC"
        ]
      },
      {
        "chain": "TRX",
        "showChainNameEn": "Tron/TRC20",
        "currencies": [
          "USDT"
        ]
      }
    ]
  }
}