curl -X POST "https://api.onekhusa.com/sandbox/v1/merchants/accounts/update" \
  --header "Authorization: Bearer your-jwt-token" \
  --header "Content-Type: application/json" \
  --header "Accept-Language: en" \
  -d '{
    "accountName": "SkyLink Aviation Services",
    "currencyCode": "MWK",
    "categoryCode": "8352",
    "postalAddress": "P.O. Box 30245, Lilongwe, Malawi",
    "collectionFeeRuleCode": "CC",
    "disbursementFeeRuleCode": "CM",
    "organisationId": "FYH0NTVW0DXK",
    "levelNumber": 3,
    "capturedBy": "admin@onekhusa.com",
    "merchantAccountNumber": 35253486
  }'

import requests

url = "https://api.onekhusa.com/sandbox/v1/merchants/accounts/update"

payload = {
    "accountName": "SkyLink Aviation Services",
    "currencyCode": "MWK",
    "categoryCode": "8352",
    "postalAddress": "P.O. Box 30245, Lilongwe, Malawi",
    "collectionFeeRuleCode": "CC",
    "disbursementFeeRuleCode": "CM",
    "organisationId": "FYH0NTVW0DXK",
    "levelNumber": 3,
    "capturedBy": "admin@onekhusa.com",
    "merchantAccountNumber": 35253486
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    accountName: 'SkyLink Aviation Services',
    currencyCode: 'MWK',
    categoryCode: '8352',
    postalAddress: 'P.O. Box 30245, Lilongwe, Malawi',
    collectionFeeRuleCode: 'CC',
    disbursementFeeRuleCode: 'CM',
    organisationId: 'FYH0NTVW0DXK',
    levelNumber: 3,
    capturedBy: 'admin@onekhusa.com',
    merchantAccountNumber: 35253486
  })
};

fetch('https://api.onekhusa.com/sandbox/v1/merchants/accounts/update', 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.onekhusa.com/sandbox/v1/merchants/accounts/update",
  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([
    'accountName' => 'SkyLink Aviation Services',
    'currencyCode' => 'MWK',
    'categoryCode' => '8352',
    'postalAddress' => 'P.O. Box 30245, Lilongwe, Malawi',
    'collectionFeeRuleCode' => 'CC',
    'disbursementFeeRuleCode' => 'CM',
    'organisationId' => 'FYH0NTVW0DXK',
    'levelNumber' => 3,
    'capturedBy' => 'admin@onekhusa.com',
    'merchantAccountNumber' => 35253486
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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.onekhusa.com/sandbox/v1/merchants/accounts/update"

	payload := strings.NewReader("{\n  \"accountName\": \"SkyLink Aviation Services\",\n  \"currencyCode\": \"MWK\",\n  \"categoryCode\": \"8352\",\n  \"postalAddress\": \"P.O. Box 30245, Lilongwe, Malawi\",\n  \"collectionFeeRuleCode\": \"CC\",\n  \"disbursementFeeRuleCode\": \"CM\",\n  \"organisationId\": \"FYH0NTVW0DXK\",\n  \"levelNumber\": 3,\n  \"capturedBy\": \"admin@onekhusa.com\",\n  \"merchantAccountNumber\": 35253486\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.onekhusa.com/sandbox/v1/merchants/accounts/update")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"accountName\": \"SkyLink Aviation Services\",\n  \"currencyCode\": \"MWK\",\n  \"categoryCode\": \"8352\",\n  \"postalAddress\": \"P.O. Box 30245, Lilongwe, Malawi\",\n  \"collectionFeeRuleCode\": \"CC\",\n  \"disbursementFeeRuleCode\": \"CM\",\n  \"organisationId\": \"FYH0NTVW0DXK\",\n  \"levelNumber\": 3,\n  \"capturedBy\": \"admin@onekhusa.com\",\n  \"merchantAccountNumber\": 35253486\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.onekhusa.com/sandbox/v1/merchants/accounts/update")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"accountName\": \"SkyLink Aviation Services\",\n  \"currencyCode\": \"MWK\",\n  \"categoryCode\": \"8352\",\n  \"postalAddress\": \"P.O. Box 30245, Lilongwe, Malawi\",\n  \"collectionFeeRuleCode\": \"CC\",\n  \"disbursementFeeRuleCode\": \"CM\",\n  \"organisationId\": \"FYH0NTVW0DXK\",\n  \"levelNumber\": 3,\n  \"capturedBy\": \"admin@onekhusa.com\",\n  \"merchantAccountNumber\": 35253486\n}"

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

"Merchant has been updated successfully"