curl --request GET \
  --url https://openplatform.gateapi.io/payment/open/institution/v1/pay/balance/query \
  --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": {
    "balance_list": [
      {
        "currency": "DOGE",
        "available": "1843.32095"
      },
      {
        "currency": "FORG",
        "available": "3.02"
      }
    ]
  }
}