<https://blog.postman.com/#/schema/person/image/>
<http://schema.org/url>
<https://secure.gravatar.com/avatar/fd47245e950ff02865e098c7d9ab4d42?s=96&d=https%3A%2F%2Fblog.postman.com%2Fwp-content%2Fuploads%2F2021%2F11%2Favatars-06.png&r=g>
<https://blog.postman.com/postman-custom-webhooks/>