A subset of attachment information served via the `beaconinfo.getforobserved` method, used when your users encounter your beacons.

Attributes

• data (String): An opaque data container for client-provided data. Defaults to: null.
• namespacedType (String): Specifies what kind of attachment this is. Tells a client how to interpret the `data` field. Format is <var>namespace/type</var>, for example <code>scrupulous-wombat-12345/welcome-message</code> Defaults to: null.