curl --request POST \
  --url https://api.hotstuff.trade/exchange \
  --header 'Content-Type: application/json' \
  --data '
{
  "action": {
    "data": {
      "instrumentId": 1,
      "expiresAfter": 1769692563352,
      "nonce": 1769688963352
    },
    "type": "cancelByInstrument"
  },
  "signature": "0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...",
  "nonce": 1769688963352
}
'

import requests

url = "https://api.hotstuff.trade/exchange"

payload = {
    "action": {
        "data": {
            "instrumentId": 1,
            "expiresAfter": 1769692563352,
            "nonce": 1769688963352
        },
        "type": "cancelByInstrument"
    },
    "signature": "0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...",
    "nonce": 1769688963352
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    action: {
      data: {instrumentId: 1, expiresAfter: 1769692563352, nonce: 1769688963352},
      type: 'cancelByInstrument'
    },
    signature: '0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...',
    nonce: 1769688963352
  })
};

fetch('https://api.hotstuff.trade/exchange', 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://api.hotstuff.trade/exchange",
  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([
    'action' => [
        'data' => [
                'instrumentId' => 1,
                'expiresAfter' => 1769692563352,
                'nonce' => 1769688963352
        ],
        'type' => 'cancelByInstrument'
    ],
    'signature' => '0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...',
    'nonce' => 1769688963352
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.hotstuff.trade/exchange"

	payload := strings.NewReader("{\n  \"action\": {\n    \"data\": {\n      \"instrumentId\": 1,\n      \"expiresAfter\": 1769692563352,\n      \"nonce\": 1769688963352\n    },\n    \"type\": \"cancelByInstrument\"\n  },\n  \"signature\": \"0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...\",\n  \"nonce\": 1769688963352\n}")

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

	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))

}

HttpResponse<String> response = Unirest.post("https://api.hotstuff.trade/exchange")
  .header("Content-Type", "application/json")
  .body("{\n  \"action\": {\n    \"data\": {\n      \"instrumentId\": 1,\n      \"expiresAfter\": 1769692563352,\n      \"nonce\": 1769688963352\n    },\n    \"type\": \"cancelByInstrument\"\n  },\n  \"signature\": \"0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...\",\n  \"nonce\": 1769688963352\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hotstuff.trade/exchange")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"action\": {\n    \"data\": {\n      \"instrumentId\": 1,\n      \"expiresAfter\": 1769692563352,\n      \"nonce\": 1769688963352\n    },\n    \"type\": \"cancelByInstrument\"\n  },\n  \"signature\": \"0xb429a7136360bdc0dc128730c194ca6e718de8ccd2ae2acc8e11c9cdf86acb29...\",\n  \"nonce\": 1769688963352\n}"

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

{
  "tx_hash": "0x7c573d0d802c800a58793bb378b89773f28c2505bcca19f7c20b0ab0e4d66e9e",
  "tx_type": 1313,
  "error": "",
  "data": {
    "success": "true",
    "orders_cancelled": 5
  },
  "address": "0x9908658A316D743159F001026F1ef08aa8F0b55B"
}