Look Ma, a string of data!: {"a": [1, 2], "b": {"a": 1, "b": 2}}

$VAR1 = {
          'a' => [
                   1,
                   2
                 ],
          'b' => {
                   'a' => 1,
                   'b' => 2
                 }
        };

Convert back from Perl to JSON string, and pretty print:
{
   "a" : [
      1,
      2
   ],
   "b" : {
      "a" : 1,
      "b" : 2
   }
}