Modifying a webhook
The same principles apply to the modification of the webhook, except that a PUT request must be made instead of POST.
PUT /marketplaces/{marketplace}/webhooksExample for assigning a new address to the existing webhook on the token object:
Request
PUT https://secure.lyra.com/marketplaces/6f6b04c2-0e99-4f8d-b710-8856f5654bb8/webhooksBody
{
"event_type":"token",
"target":"https://mymarketplace.com/mkp/webhooks/token.php"
}