curl --request POST \
  --url https://api.example.com/Redemption/dx/api/application/v2/objects \
  --header 'Content-Type: application/json' \
  --data '
{
  "objectTypeID": "RedemptionCase",
  "content": {
    "Origin": "API",
    "MemberExternalID": "34567890",
    "RedemptionItems": [
      {
        "Quantity": "1",
        "RewardExternalID": "34567",
        "VoucherCode": "45324125"
      },
      {
        "Quantity": "1",
        "RewardExternalID": "45678",
        "VoucherCode": "2312312a"
      }
    ]
  }
}
'

import requests

url = "https://api.example.com/Redemption/dx/api/application/v2/objects"

payload = {
    "objectTypeID": "RedemptionCase",
    "content": {
        "Origin": "API",
        "MemberExternalID": "34567890",
        "RedemptionItems": [
            {
                "Quantity": "1",
                "RewardExternalID": "34567",
                "VoucherCode": "45324125"
            },
            {
                "Quantity": "1",
                "RewardExternalID": "45678",
                "VoucherCode": "2312312a"
            }
        ]
    }
}
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({
    objectTypeID: 'RedemptionCase',
    content: {
      Origin: 'API',
      MemberExternalID: '34567890',
      RedemptionItems: [
        {Quantity: '1', RewardExternalID: '34567', VoucherCode: '45324125'},
        {Quantity: '1', RewardExternalID: '45678', VoucherCode: '2312312a'}
      ]
    }
  })
};

fetch('https://api.example.com/Redemption/dx/api/application/v2/objects', 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.example.com/Redemption/dx/api/application/v2/objects",
  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([
    'objectTypeID' => 'RedemptionCase',
    'content' => [
        'Origin' => 'API',
        'MemberExternalID' => '34567890',
        'RedemptionItems' => [
                [
                                'Quantity' => '1',
                                'RewardExternalID' => '34567',
                                'VoucherCode' => '45324125'
                ],
                [
                                'Quantity' => '1',
                                'RewardExternalID' => '45678',
                                'VoucherCode' => '2312312a'
                ]
        ]
    ]
  ]),
  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.example.com/Redemption/dx/api/application/v2/objects"

	payload := strings.NewReader("{\n  \"objectTypeID\": \"RedemptionCase\",\n  \"content\": {\n    \"Origin\": \"API\",\n    \"MemberExternalID\": \"34567890\",\n    \"RedemptionItems\": [\n      {\n        \"Quantity\": \"1\",\n        \"RewardExternalID\": \"34567\",\n        \"VoucherCode\": \"45324125\"\n      },\n      {\n        \"Quantity\": \"1\",\n        \"RewardExternalID\": \"45678\",\n        \"VoucherCode\": \"2312312a\"\n      }\n    ]\n  }\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.example.com/Redemption/dx/api/application/v2/objects")
  .header("Content-Type", "application/json")
  .body("{\n  \"objectTypeID\": \"RedemptionCase\",\n  \"content\": {\n    \"Origin\": \"API\",\n    \"MemberExternalID\": \"34567890\",\n    \"RedemptionItems\": [\n      {\n        \"Quantity\": \"1\",\n        \"RewardExternalID\": \"34567\",\n        \"VoucherCode\": \"45324125\"\n      },\n      {\n        \"Quantity\": \"1\",\n        \"RewardExternalID\": \"45678\",\n        \"VoucherCode\": \"2312312a\"\n      }\n    ]\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/Redemption/dx/api/application/v2/objects")

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  \"objectTypeID\": \"RedemptionCase\",\n  \"content\": {\n    \"Origin\": \"API\",\n    \"MemberExternalID\": \"34567890\",\n    \"RedemptionItems\": [\n      {\n        \"Quantity\": \"1\",\n        \"RewardExternalID\": \"34567\",\n        \"VoucherCode\": \"45324125\"\n      },\n      {\n        \"Quantity\": \"1\",\n        \"RewardExternalID\": \"45678\",\n        \"VoucherCode\": \"2312312a\"\n      }\n    ]\n  }\n}"

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

{
  "data": {
    "objectInfo": {
      "ID": "STE6TG95YWx0eV9fUmVkZW1wdGlvbkNhc2VfNjg5ZTRiYmYxZGQzOTQyZjgxMTYzODE4",
      "status": "Open-Ready To Process"
    }
  },
  "ID": "STE6TG95YWx0eV9fUmVkZW1wdGlvbkNhc2VfNjg5ZTRiYmYxZGQzOTQyZjgxMTYzODE4"
}