curl 'https://qa-super.mygigsters.com.au/v1/contributions/fund/validate' -X POST \
    -u "apiUsername:apiPassword"  \
    -H "Content-Type: application/json" --data '{"fundUsis":["40328908469310"]}'

const response = await fetch("https://qa-super.mygigsters.com.au/v1/contributions/fund/validate", {
  method: "POST",
  headers: {
    Authorization: "Basic " + Buffer.from("apiUsername:apiPassword").toString("base64"),
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "fundUsis": [
      "40328908469310"
    ]
  }),
});

const data = await response.json();
console.log(data);

import requests

response = requests.post(
    "https://qa-super.mygigsters.com.au/v1/contributions/fund/validate",
    auth=("apiUsername", "apiPassword"),
    json={
        "fundUsis": [
            "40328908469310",
        ],
    },
)

print(response.json())

require "net/http"
require "json"
require "uri"

uri = URI("https://qa-super.mygigsters.com.au/v1/contributions/fund/validate")
request = Net::HTTP::Post.new(uri)
request.basic_auth("apiUsername", "apiPassword")
request["Content-Type"] = "application/json"
request.body = <<~JSON
  {
    "fundUsis": [
      "40328908469310"
    ]
  }
JSON

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

<?php

$ch = curl_init("https://qa-super.mygigsters.com.au/v1/contributions/fund/validate");

curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_USERPWD => "apiUsername:apiPassword",
    CURLOPT_HTTPHEADER => [
        "Content-Type: application/json",
    ],
    CURLOPT_POSTFIELDS => <<<'JSON'
{
  "fundUsis": [
    "40328908469310"
  ]
}
JSON,
]);

$response = curl_exec($ch);
curl_close($ch);

print_r(json_decode($response, true));

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.Base64;

public class Example {
    public static void main(String[] args) throws Exception {
        String credentials = Base64.getEncoder()
            .encodeToString("apiUsername:apiPassword".getBytes());

        String body = String.join("\n",
            "{",
            "  \"fundUsis\": [",
            "    \"40328908469310\"",
            "  ]",
            "}"
        );

        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://qa-super.mygigsters.com.au/v1/contributions/fund/validate"))
            .header("Authorization", "Basic " + credentials)
            .header("Content-Type", "application/json")
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

package main

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

func main() {
	body := strings.NewReader(`{
  "fundUsis": [
    "40328908469310"
  ]
}`)

	req, err := http.NewRequest("POST", "https://qa-super.mygigsters.com.au/v1/contributions/fund/validate", body)
	if err != nil {
		panic(err)
	}
	req.SetBasicAuth("apiUsername", "apiPassword")
	req.Header.Set("Content-Type", "application/json")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	data, _ := io.ReadAll(res.Body)
	fmt.Println(string(data))
}

using System.Net.Http.Headers;
using System.Text;

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Post, "https://qa-super.mygigsters.com.au/v1/contributions/fund/validate");
request.Headers.Authorization = new AuthenticationHeaderValue(
    "Basic", Convert.ToBase64String(Encoding.UTF8.GetBytes("apiUsername:apiPassword")));
request.Content = new StringContent(@"{
  ""fundUsis"": [
    ""40328908469310""
  ]
}", Encoding.UTF8, "application/json");

var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

{
  "success": true,
  "statusCode": 200,
  "message": "Fund validation successful",
  "transactionId": "txn-550e8400-e29b-41d4-a716-446655440000"
}