How to consume a facebook api for posting in a fanpage in facebook

i´m searching for web integration with facebook api rest but the web activities is not longer avaliable, anyone has an example of this?
https://www.uipath.com/tutorials/application-integration-rest-web-service-json
and the example has a broken link
https://www.uipath.com/kb-articles/consuming-rest-web-service-get-weather