Generate a new HMAC key
Before generating a new HMAC key, ensure you can still accept events signed with your previous HMAC key for some time, because:
It can take some time to propagate the new key in our infrastructure. HMAC signatures are calculated when the event is created, so any webhook events queued before you save the new HMAC key are signed using your previous key.
Log in to your Customer Area. Go to Developers > Webhooks Search by endpoint URL or WebhookID to find the webhook you want to update and select the edit icon. Go to Security and select the edit icon for HMAC key. Select Generate for a new key. Copy the HMAC key and store it securely in your system. You won't be able to restore it later. Select Apply, and Save changes. changes
Tip: Read more on how to verify HMAC signatures.