curl --request POST \
  --url https://staging.apimonaco.xyz/api/v1/withdrawals \
  --header 'Content-Type: application/json' \
  --header 'X-Monaco-Signature: <api-key>' \
  --data '
{
  "assetId": "123e4567-e89b-12d3-a456-426614174000",
  "amount": "1000000000000000000",
  "destination": "0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5",
  "source": "spot"
}
'

import requests

url = "https://staging.apimonaco.xyz/api/v1/withdrawals"

payload = {
    "assetId": "123e4567-e89b-12d3-a456-426614174000",
    "amount": "1000000000000000000",
    "destination": "0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5",
    "source": "spot"
}
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({
    assetId: '123e4567-e89b-12d3-a456-426614174000',
    amount: '1000000000000000000',
    destination: '0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5',
    source: 'spot'
  })
};

fetch('https://staging.apimonaco.xyz/api/v1/withdrawals', 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/withdrawals",
  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([
    'assetId' => '123e4567-e89b-12d3-a456-426614174000',
    'amount' => '1000000000000000000',
    'destination' => '0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5',
    'source' => 'spot'
  ]),
  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/withdrawals"

	payload := strings.NewReader("{\n  \"assetId\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"amount\": \"1000000000000000000\",\n  \"destination\": \"0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5\",\n  \"source\": \"spot\"\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/withdrawals")
  .header("X-Monaco-Signature", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"assetId\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"amount\": \"1000000000000000000\",\n  \"destination\": \"0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5\",\n  \"source\": \"spot\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://staging.apimonaco.xyz/api/v1/withdrawals")

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  \"assetId\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"amount\": \"1000000000000000000\",\n  \"destination\": \"0x742d35cc6634c0532925a3b8d4060f31e2c3d8b5\",\n  \"source\": \"spot\"\n}"

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

{
  "withdrawalIndex": "42",
  "vaultAddress": "0x5fbdb2315678afecb367f032d93f642f64180aa3",
  "calldata": "<string>"
}