It is very easy with pure LiveCode.
Just set itemDelimiter to "}” to extract the JSON elements, strip "{" -characters from those, look what you need to use as the next itemDelimiter and do it again. Then move to array.
It probably takes less that 10 lines of code.
This is the way I have done it and don't need any externals.
Christer Pyyhtiä
MindCrea Ltd