I make a call to the API for a movie, eg Sunshine, and it returns the JSON data as such.

{
  "movie_results": [
    {
      "adult": false,
      "backdrop_path": "/5AIAnucJKZ3sHpm7r1ykFVIoUHK.jpg",
      "id": 1272,
      "title": "Sunshine",
      "original_language": "en",
      "original_title": "Sunshine",
      "overview": "Fifty years into the future, the sun is dying, and Earth is threatened by arctic temperatures. A team of astronauts is sent to revive the Sun — but the mission fails. Seven years later, a new team is sent to finish the mission as mankind’s last hope.",
      "poster_path": "/tM8meWkPrshbp0s5BmLpcgNX72e.jpg",
      "media_type": "movie",
      "genre_ids": [
        18,
        878,
        53
      ],
      "popularity": 20.674,
      "release_date": "2007-04-05",
      "video": false,
      "vote_average": 6.953,
      "vote_count": 3301
    }
  ],
  "person_results": [],
  "tv_results": [],
  "tv_episode_results": [],
  "tv_season_results": []
}

What I actually need is the MPA Rating, ie PG, R etc.

How do I secure more data in my API call?

I am working in BASH, so my prefered carriers are wget and cURL.

TIA