OptionalcaveOptionaluploadOptionalbuildOptionalinstallId of the install location, as the old client recorded it.
OptionalinstallOptionalpath2 is the only scheme butler will import.
OptionalsecondsOptionalinstalledA unix timestamp or an RFC3339 string, depending on the client version.
Optionallast
What the pre-v23 uncompressed
.itch/receipt.jsonrecorded.Mirrors butler's
legacyReceipt/legacyCavestructs, which it still reads when scanning install locations. There is no game title or url in this format, only ids.