A detailed document is available at https://1drv.ms/w/s!AgxRpmLnSp_oieB7mKD9-DQ94FdLWw?e=iE803l

It is larger than the 8MB maximum and possibly a bit outdated as it was written, and posted to MotherDuck in September of 2023.

It describes in detail the layout and data which a fully-blown dashboard should contain.