THIS IS CURRENT AS OF VERSION 33.1.592088.0
If the manifest files are indeed ZSTD files, they are missing the file signature and frame descriptor as outlined here:
https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#frame_header
[07-08-2022] [18:22:35]: No item assignment found for item: 0x7F630C94B0EAFD0B
[07-08-2022] [18:22:35]: No item assignment found for item: 0xEB76E6852CB20D25
[07-08-2022] [18:22:35]: No item assignment found for item: 0x1719C695329F5815
[07-08-2022] [18:22:35]: No item assignment found for item: 0x7CAC5BAF4E884102
[07-08-2022] [18:22:35]: No item assignment found for item: 0x59DA5AF3C4F11CA2
[07-08-2022] [18:22:35]: No item assignment found for item: 0xB0CACC88C22CE548
[07-08-2022] [18:22:35]: No item assignment found for item: 0x925AFFCCBB93C0BE
Game seems to be accessing appdata/local/d3dscache
-> custom engine using Direct3D as graphics API