Not able to verify webhook

[raju-emadri]

I have used most of the functions from your package and all work great, except webhook.
The result always return empty. Logs "verification failed" message
public function verifyWebhook(Request $request)
{
$data = $request->getContent();
$hmacHeader = $request->server('HTTP_X_SHOPIFY_HMAC_SHA256');

if (Shopify::verifyWebHook($data, $hmacHeader)) {
    logger("verification passed");
} else {
    logger("verification failed");
}

}