I need to setup the Intercom webhook to an external endpoint. But the external endpoint needs an authorization header. I could not find the HTTP header fields in Intercom's webhook configuration.
https://www.rfc-editor.org/rfc/rfc6750#section-5
"Don't pass bearer tokens in page URLs: Bearer tokens SHOULD NOT be
passed in page URLs (for example, as query string parameters).
Instead, bearer tokens SHOULD be passed in HTTP message headers or
message bodies for which confidentiality measures are taken.
Browsers, web servers, and other software may not adequately
secure URLs in the browser history, web server logs, and other
data structures. If bearer tokens are passed in page URLs,
attackers might be able to steal them from the history data, logs,
or other unsecured locations."