Customise notification payload in Share

[csarven]

The 'Share' feature is a generic announcement/notification that's sent to the attention of a target. This is fine as is, but is there room for improvement?

Current user input:

• Note/summary for the announcement (as:summary)

Current automatically created information:

• Type (as:Announce)
• Object of the notification that's being announced (as:object)
• Notification timestamp when generated (as:updated)
• Agent who triggered the notification (as:actor)
• To the attention of (as:to, can be multiple)
• License of the notification (schema:license using CC-BY)

1. Identify other information that could be sent in the LDN payload.
2. Identity information that can be input by the user e.g., license, purpose?