curl --request POST \
  --url https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery \
  --header 'Content-Type: application/json' \
  --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>' \
  --data '
{
  "pageNo": 1,
  "pageSize": 10
}
'

import requests

url = "https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery"

payload = {
    "pageNo": 1,
    "pageSize": 10
}
headers = {
    "X-GatePay-Certificate-ClientId": "<x-gatepay-certificate-clientid>",
    "X-GatePay-Signature": "<x-gatepay-signature>",
    "X-GatePay-Timestamp": "<x-gatepay-timestamp>",
    "X-GatePay-Nonce": "<x-gatepay-nonce>",
    "X-GatePay-On-Behalf-Of": "<x-gatepay-on-behalf-of>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-GatePay-Certificate-ClientId': '<x-gatepay-certificate-clientid>',
    'X-GatePay-Signature': '<x-gatepay-signature>',
    'X-GatePay-Timestamp': '<x-gatepay-timestamp>',
    'X-GatePay-Nonce': '<x-gatepay-nonce>',
    'X-GatePay-On-Behalf-Of': '<x-gatepay-on-behalf-of>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({pageNo: 1, pageSize: 10})
};

fetch('https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'pageNo' => 1,
    'pageSize' => 10
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-GatePay-Certificate-ClientId: <x-gatepay-certificate-clientid>",
    "X-GatePay-Nonce: <x-gatepay-nonce>",
    "X-GatePay-On-Behalf-Of: <x-gatepay-on-behalf-of>",
    "X-GatePay-Signature: <x-gatepay-signature>",
    "X-GatePay-Timestamp: <x-gatepay-timestamp>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

HttpResponse<String> response = Unirest.post("https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery")
  .header("X-GatePay-Certificate-ClientId", "<x-gatepay-certificate-clientid>")
  .header("X-GatePay-Signature", "<x-gatepay-signature>")
  .header("X-GatePay-Timestamp", "<x-gatepay-timestamp>")
  .header("X-GatePay-Nonce", "<x-gatepay-nonce>")
  .header("X-GatePay-On-Behalf-Of", "<x-gatepay-on-behalf-of>")
  .header("Content-Type", "application/json")
  .body("{\n  \"pageNo\": 1,\n  \"pageSize\": 10\n}")
  .asString();

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery"

	payload := strings.NewReader("{\n  \"pageNo\": 1,\n  \"pageSize\": 10\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-GatePay-Certificate-ClientId", "<x-gatepay-certificate-clientid>")
	req.Header.Add("X-GatePay-Signature", "<x-gatepay-signature>")
	req.Header.Add("X-GatePay-Timestamp", "<x-gatepay-timestamp>")
	req.Header.Add("X-GatePay-Nonce", "<x-gatepay-nonce>")
	req.Header.Add("X-GatePay-On-Behalf-Of", "<x-gatepay-on-behalf-of>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://openplatform.gateapi.io/merchant/open/institution/v1/pay/merchant/product/pageQuery")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-GatePay-Certificate-ClientId"] = '<x-gatepay-certificate-clientid>'
request["X-GatePay-Signature"] = '<x-gatepay-signature>'
request["X-GatePay-Timestamp"] = '<x-gatepay-timestamp>'
request["X-GatePay-Nonce"] = '<x-gatepay-nonce>'
request["X-GatePay-On-Behalf-Of"] = '<x-gatepay-on-behalf-of>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"pageNo\": 1,\n  \"pageSize\": 10\n}"

response = http.request(request)
puts response.read_body

{
  "success": "true",
  "code": "0",
  "message": "",
  "data": {
    "total": 1,
    "list": [
      {
        "merchantProductNo": "MTDC123",
        "productNo": "82973642140155927",
        "productName": "Meituan Bike",
        "productDesc": "Meituan Bike Membership",
        "productLogo": "https://s3.ap-northeast-1.amazonaws.com/gimg.gateimg.com/image/1627288/fe48d444c1943d65fb0125d766a7124d277f52d7112eebe6df47e321bafda073.jpg",
        "status": "ACTIVE",
        "createTime": 1774853409437,
        "updateTime": 1774853409437,
        "priceList": [
          {
            "merchantPriceNo": "MTDC_1123",
            "priceNo": "82973642140155928",
            "productNo": "82973642140155927",
            "priceName": "Monthly Plan",
            "priceDesc": "Monthly",
            "priceType": "FIX_AMOUNT",
            "payChannels": [
              {
                "channel": "GATEPAY",
                "status": "ACTIVE"
              }
            ],
            "amountType": "fiat",
            "cryptoCurrency": "",
            "cryptoAmount": null,
            "fiatCurrency": "USD",
            "fiatAmount": 10,
            "period": "MONTH",
            "interval": 1,
            "promoConfigType": "NONE",
            "promoAmount": null,
            "promoRate": null,
            "status": "ACTIVE",
            "createTime": 1774853409437,
            "updateTime": 1774853409437
          }
        ]
      }
    ]
  }
}