Pass Dictionary as Value in Cobbler CLI --autoinstall-meta

Question

I want to use --autoinstall-meta flag in Cobbler CLI to pass metadata to kickstart.

cobbler system edit --name=<system-name> --autoinstall-meta="<the ks_meta>"

The problem i'm facing is to pass dictionary as a value to a certain key. Let's say i want my ks_meta to be {a:{b:c}} or even more complex {a:{b:[c,d]}}

I can't find the parser that --autoinstall-meta uses to parse the value or any example showing how to do that, the only examples I find include string=string values such: --autoinstall-meta="a=b c=d"

any help?

I have trying multiple options from common sense like

cobbler system edit --name=<system-name> --autoinstall-meta="a=b:c"

cobbler system edit --name=<system-name> --autoinstall-meta="a=b:c;d:e"

cobbler system edit --name=<system-name> --autoinstall-meta="{a:{b:c}}"

None worked, it always takes everything after the "=" no matter what is it and pass it as a value. Thank You!