curl --request POST \
  --url https://api.nomba.com/v1/global-payout/exchange/authorize \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --header 'accountId: <accountid>' \
  --data '
{
  "amount": 1,
  "sourceCurrency": "USD",
  "destinationCurrency": "CDF",
  "senderName": "John Doe",
  "receiverName": "John Doe",
  "sourceCountryIsoCode": "CD",
  "destinationCountryIsoCode": "CD",
  "narration": "Transfer between my accounts",
  "lockedExchangeRateId": "01kkk4b7rh8pcvtw1s1nxs144s"
}
'

import requests

url = "https://api.nomba.com/v1/global-payout/exchange/authorize"

payload = {
    "amount": 1,
    "sourceCurrency": "USD",
    "destinationCurrency": "CDF",
    "senderName": "John Doe",
    "receiverName": "John Doe",
    "sourceCountryIsoCode": "CD",
    "destinationCountryIsoCode": "CD",
    "narration": "Transfer between my accounts",
    "lockedExchangeRateId": "01kkk4b7rh8pcvtw1s1nxs144s"
}
headers = {
    "Authorization": "<authorization>",
    "accountId": "<accountid>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    Authorization: '<authorization>',
    accountId: '<accountid>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    amount: 1,
    sourceCurrency: 'USD',
    destinationCurrency: 'CDF',
    senderName: 'John Doe',
    receiverName: 'John Doe',
    sourceCountryIsoCode: 'CD',
    destinationCountryIsoCode: 'CD',
    narration: 'Transfer between my accounts',
    lockedExchangeRateId: '01kkk4b7rh8pcvtw1s1nxs144s'
  })
};

fetch('https://api.nomba.com/v1/global-payout/exchange/authorize', 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.nomba.com/v1/global-payout/exchange/authorize",
  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([
    'amount' => 1,
    'sourceCurrency' => 'USD',
    'destinationCurrency' => 'CDF',
    'senderName' => 'John Doe',
    'receiverName' => 'John Doe',
    'sourceCountryIsoCode' => 'CD',
    'destinationCountryIsoCode' => 'CD',
    'narration' => 'Transfer between my accounts',
    'lockedExchangeRateId' => '01kkk4b7rh8pcvtw1s1nxs144s'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <authorization>",
    "Content-Type: application/json",
    "accountId: <accountid>"
  ],
]);

$response = curl_exec($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.nomba.com/v1/global-payout/exchange/authorize"

	payload := strings.NewReader("{\n  \"amount\": 1,\n  \"sourceCurrency\": \"USD\",\n  \"destinationCurrency\": \"CDF\",\n  \"senderName\": \"John Doe\",\n  \"receiverName\": \"John Doe\",\n  \"sourceCountryIsoCode\": \"CD\",\n  \"destinationCountryIsoCode\": \"CD\",\n  \"narration\": \"Transfer between my accounts\",\n  \"lockedExchangeRateId\": \"01kkk4b7rh8pcvtw1s1nxs144s\"\n}")

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

	req.Header.Add("Authorization", "<authorization>")
	req.Header.Add("accountId", "<accountid>")
	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.nomba.com/v1/global-payout/exchange/authorize")
  .header("Authorization", "<authorization>")
  .header("accountId", "<accountid>")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount\": 1,\n  \"sourceCurrency\": \"USD\",\n  \"destinationCurrency\": \"CDF\",\n  \"senderName\": \"John Doe\",\n  \"receiverName\": \"John Doe\",\n  \"sourceCountryIsoCode\": \"CD\",\n  \"destinationCountryIsoCode\": \"CD\",\n  \"narration\": \"Transfer between my accounts\",\n  \"lockedExchangeRateId\": \"01kkk4b7rh8pcvtw1s1nxs144s\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.nomba.com/v1/global-payout/exchange/authorize")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<authorization>'
request["accountId"] = '<accountid>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"amount\": 1,\n  \"sourceCurrency\": \"USD\",\n  \"destinationCurrency\": \"CDF\",\n  \"senderName\": \"John Doe\",\n  \"receiverName\": \"John Doe\",\n  \"sourceCountryIsoCode\": \"CD\",\n  \"destinationCountryIsoCode\": \"CD\",\n  \"narration\": \"Transfer between my accounts\",\n  \"lockedExchangeRateId\": \"01kkk4b7rh8pcvtw1s1nxs144s\"\n}"

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

{
  "code": "00",
  "description": "Successful",
  "data": {
    "wtTransactionId": "01kkk8cjk0fpw9jx2n01wd8yfw",
    "coreTransactionId": "API-P2P-CB9EC-0c2d962e-4730-48e7-b522-d65cac511549",
    "status": "PROCESSING",
    "coreStatus": "SUCCESS",
    "type": "EXCHANGE"
  }
}