Attribute set of site options for this profile. The keys of that attribute set consist of ULIDs. A ULID is made of 16 characters, each of which is one of '0123456789ABCDEFGHJKMNPQRSTVWXYZ' (Excluding I, L, O and U). See https://github.com/ulid/spec?tab=readme-ov-file#canonical-string-representation. Site ULIDs must be unique across profiles.