#!/usr/bin/env -S awk -f

BEGIN   {
    FS=": "

    prev_empty=1
    t="  "

    print "[ {"
}

!NF { # empty line, update separator so next non empty line closes the dict
    prev_empty=1
    t="},\n{ "
    next # skip line (we won't match anything else)
}

{
    printf t "\"%s\" : \"%s\"\n", $1, $2

    if (prev_empty) {
        # we were the first after a group of empty lines, following ones have to
        # have a comma
        prev_empty=0
        t=", "
    }
}

END     { print "} ]" }