curl --request POST \
  --url https://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview \
  --header 'Content-Type: application/json' \
  --header 'X-Monaco-Signature: <api-key>' \
  --data '
{
  "leader": "alpha_trader",
  "marginModePolicy": "FOLLOW",
  "sizingMode": "PROPORTIONAL",
  "sizingParam": "<string>",
  "leverageMode": "FOLLOW",
  "fixedLeverage": "<string>",
  "allocation": "1000",
  "markets": {
    "tradingPairIds": [
      "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    ]
  }
}
'

import requests

url = "https://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview"

payload = {
    "leader": "alpha_trader",
    "marginModePolicy": "FOLLOW",
    "sizingMode": "PROPORTIONAL",
    "sizingParam": "<string>",
    "leverageMode": "FOLLOW",
    "fixedLeverage": "<string>",
    "allocation": "1000",
    "markets": { "tradingPairIds": ["3c90c3cc-0d44-4b50-8888-8dd25736052a"] }
}
headers = {
    "X-Monaco-Signature": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Monaco-Signature': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    leader: 'alpha_trader',
    marginModePolicy: 'FOLLOW',
    sizingMode: 'PROPORTIONAL',
    sizingParam: '<string>',
    leverageMode: 'FOLLOW',
    fixedLeverage: '<string>',
    allocation: '1000',
    markets: {tradingPairIds: ['3c90c3cc-0d44-4b50-8888-8dd25736052a']}
  })
};

fetch('https://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview', 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://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview",
  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([
    'leader' => 'alpha_trader',
    'marginModePolicy' => 'FOLLOW',
    'sizingMode' => 'PROPORTIONAL',
    'sizingParam' => '<string>',
    'leverageMode' => 'FOLLOW',
    'fixedLeverage' => '<string>',
    'allocation' => '1000',
    'markets' => [
        'tradingPairIds' => [
                '3c90c3cc-0d44-4b50-8888-8dd25736052a'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Monaco-Signature: <api-key>"
  ],
]);

$response = curl_exec($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://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview"

	payload := strings.NewReader("{\n  \"leader\": \"alpha_trader\",\n  \"marginModePolicy\": \"FOLLOW\",\n  \"sizingMode\": \"PROPORTIONAL\",\n  \"sizingParam\": \"<string>\",\n  \"leverageMode\": \"FOLLOW\",\n  \"fixedLeverage\": \"<string>\",\n  \"allocation\": \"1000\",\n  \"markets\": {\n    \"tradingPairIds\": [\n      \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n    ]\n  }\n}")

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

	req.Header.Add("X-Monaco-Signature", "<api-key>")
	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://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview")
  .header("X-Monaco-Signature", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"leader\": \"alpha_trader\",\n  \"marginModePolicy\": \"FOLLOW\",\n  \"sizingMode\": \"PROPORTIONAL\",\n  \"sizingParam\": \"<string>\",\n  \"leverageMode\": \"FOLLOW\",\n  \"fixedLeverage\": \"<string>\",\n  \"allocation\": \"1000\",\n  \"markets\": {\n    \"tradingPairIds\": [\n      \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://staging.apimonaco.xyz/api/v1/copy-trading/follows/preview")

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

request = Net::HTTP::Post.new(url)
request["X-Monaco-Signature"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"leader\": \"alpha_trader\",\n  \"marginModePolicy\": \"FOLLOW\",\n  \"sizingMode\": \"PROPORTIONAL\",\n  \"sizingParam\": \"<string>\",\n  \"leverageMode\": \"FOLLOW\",\n  \"fixedLeverage\": \"<string>\",\n  \"allocation\": \"1000\",\n  \"markets\": {\n    \"tradingPairIds\": [\n      \"3c90c3cc-0d44-4b50-8888-8dd25736052a\"\n    ]\n  }\n}"

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

{
  "estimatedMargin": "125.40",
  "estimatedFee": "0.35",
  "copiedPositions": 2,
  "skippedPositions": 1,
  "truncated": true
}