Personal Server origin, without a trailing slash.
Web3Signed audience every proof under this session is addressed to.
The write-grant the session is bound to.
The bearer token (vana_write_...).
Unix milliseconds after which the token is no longer accepted.
Write patterns (prefix stripped) the session may write into.
The builder key the session was opened with; signs every write proof.
An open write session: the bearer token plus what it was minted for.