-`display_name`: an alternative, bigger name with richer characters than `name`. `name` should always be set regardless of the presence of `display_name` in the metadata.
-`{<relay-url>: {"read": <true|false>, "write": <true|false>}, ...}`: an object of relays used by a user to read/write. [NIP-65](65.md) should be used instead.
These tags may be present in multiple event kinds. Whenever a different meaning is not specified by some more specific NIP (currently only "r" tags on kind 10002 events have a different meaning), they have the following meaning: