The first filesize is from 0x08 to the end of the row, and is a big endian int32 describing the length of offset 20 to the end of the file.
The next filsize is from offset 10 to the end of the row and is a little endian int24 describing the length of the start of the JSON data (
[) to the end of the JSON data (])
The final size is from offset 20 to the beginning of the JSON data (
[) and is once again a little endian int24. Its value is the second size (in this example 62104) plus one - 62105.
All three of these values need to be edited for the game not to crash.