Stripe allows you to test your webhooks, but if you are running a local development environment such as UwAmp then it is difficult to integrate.
The solution is to use Putty to create a reverse tunnel to publish the local dev enviornment through your webserver.
On NGinx on the VPS server you need to allow the remote port forwarding; edit /etc/ssh/sshd_config and add an entry
Then restart the ssh daemon
sudo restart ssh
Next in Putty select Connection | SSH | Tunnels and enter the following:
Source port the port on the VPS to listen to
Choose Remove and select Add
Open the Putty Connection.
Now when connecting to the remove port specified this will be delivered via the local tunnel to the development environment.