$ perl -e 'use JSON; use Data::Dump; my $x = do { local $/; <> }; dd(decode_json $x)' pm_1201279_input.json
{
  def  => [
            {
              pos  => "noun",
              text => "time",
              tr   => [
                        {
                          gen  => "m",
                          mean => [{ text => "day" }, { text => "moment" }],
                          pos  => "noun",
                          syn  => [
                                    { gen => "f", pos => "noun", text => "volta" },
                                    { gen => "m", pos => "noun", text => "momento" },
                                    { gen => "m", pos => "noun", text => "Time" },
                                  ],
                          text => "tempo",
                        },
                      ],
              ts   => "ta&#618;m",
            },
          ],
  head => {},
}