PHP/Laravel

                              
                                  // In a Laravel-like app:
                                  Route::post('webhook', function (\Illuminate\Http\Request $request) {
                                      //check for the signature
                                      $secret = 'your-secret';
                                      $signature = $request->header('signature');
                                      $sign_secret = hash_hmac('sha256', json_encode($request->all()), $secret);
                                      if (!$signature || ($signature !== $sign_secret)) {
                                          // This request isn't from Just Wallet; discard
                                          abort(401);
                                      }
                                      $payload = $request->all();
                                      // It's a good idea to log all received events.
                                      Log::info($payload);
                                      // Do something (that doesn't take too long) with the payload
                                      return response(200);
                                  });
                              
                            

Ruby

                              
                                  require 'sinatra'
                                    require 'json'
                                    require 'openssl'
                                    set :port, 3000 # Replace with your desired port

                                    post '/webhook' do
                                      # Check for the signature
                                      secret = 'your-secret'
                                      signature = request.env['HTTP_WEBHOOK_SECRET']

                                      sign_secret = OpenSSL::HMAC.hexdigest('sha256', secret, JSON.generate(request.params))

                                      if !signature || (signature != sign_secret)
                                        # This request isn't from Just Wallet; discard
                                        halt 401, 'Unauthorized'
                                      end

                                      payload = request.params

                                      # It's a good idea to log all received events.
                                      puts payload

                                      # Do something (that doesn't take too long) with the payload

                                      status 200
                                      body 'OK'
                                    end

                              
                        

Javascript

                            
                            const express = require('express');
                            const crypto = require('crypto');
                            const bodyParser = require('body-parser');

                            const app = express();
                            const port = 3000; // Replace with your desired port

                            app.use(bodyParser.json());

                            app.post('/webhook', (req, res) => {
                                // Check for the signature
                                const secret = 'your-secret';
                                const signature = req.get('signature');

                                const signSecret = crypto.createHmac('sha256', secret)
                                                       .update(JSON.stringify(req.body))
                                                       .digest('hex');

                                if (!signature || (signature !== signSecret)) {
                                    // This request isn't from Just Wallet; discard
                                    return res.status(401).send('Unauthorized');
                                }

                                const payload = req.body;

                                // It's a good idea to log all received events.
                                console.log(payload);

                                // Do something (that doesn't take too long) with the payload

                                return res.status(200).send('OK');
                            });

                            app.listen(port, () => {
                                console.log(`Server is running on port ${port}`);
                            });