Webhook verification with HMAC-SHA256 signature

Hi Bubblers,

I’m trying to verify webhook from Lemonsqueezy. They provide a verification method with the nodejs code like this:

const crypto = require('crypto');

const secret    = '[SIGNING_SECRET]';
const hmac      = crypto.createHmac('sha256', secret);
const digest    = Buffer.from(hmac.update(request.rawBody).digest('hex'), 'utf8');
const signature = Buffer.from(request.get('X-Signature') || '', 'utf8');

if (!crypto.timingSafeEqual(digest, signature)) {
    throw new Error('Invalid signature.');

I’m trying to implement it with Bubble as the following:

Note: find&replace just find / and replace with \\/

But I have never gotten the right signature.
Does anyone have any experience with this? Thank you.