Read this account's retention settings

mode is off (nothing is kept) or derived (a closed list of derived fields per inspection: hashes, signal ids and severities, score, band, reason code, policy verdict; never the file's text or its name). days is 30, 90 or 365. bytesDays is how long the file itself is kept, encrypted, next to each derived record: 7, 30 or 90, or null (off, the default). bytesAvailable is false when this server cannot keep files at all; bytesDays cannot be turned on then. keys lists the live keys and their own setting: none means calls made with that key are never kept.