A unique short name useful for public interests.
Can't be changed once set.
Random name is set when not specified.
Max 36 symbols, ASCII letters, digits or dash.
Public interest is visible to others.
May be discovered and followed by non-owner.
Note that making a public interest private doesn't disconnect existing followers.
Local time when the interest expires.
The interest never expires when it's empty.
Message matching conditions.
A message should match all.
At least one is required.
Interest registered
Id: 1234567890abcdefghijklmnopqrstuvwxyz
Sources discovered: