How to send a Facebook notification through their API

Question

I asked this on the Facebook Developers Forum with no responses.. How do I send notifications to users so they show up in the Notifications globe icon tab on the top left o

Answer 1

Update : Please check oneamongu's answer below. In my old answer I was referring to the custom notifications. oneamongu defined the requests structure very well below.

Old answer : Facebook Notifications were outdated by facebook about 1 year ago. Instead, you can post on a user's wall if you wanna inform him.