You can nominate yourself or another person.
Complete address - Including city, country, pin code, etc
What’s their occupation? Any honors or distinctions? Their recent work? Why are you recommending them?
Is there a call-to-action that your talk proposes? Is there a after thought you would want the listeners to go back with? What would you want the impact of the talk to be?
Do share any available video/audio links
LinkedIn, Facebook, Twitter, etc