[
  {
    "image_id": "landmark_001.jpg",
    "landmarks": {
      "left_eye": [120, 98],
      "right_eye": [180, 100],
      "nose": [150, 130],
      "mouth_left": [125, 165],
      "mouth_right": [175, 167]
    }
  },
  {
    "image_id": "landmark_002.jpg",
    "landmarks": {
      "left_eye": [110, 95],
      "right_eye": [170, 96],
      "nose": [140, 128],
      "mouth_left": [118, 160],
      "mouth_right": [168, 162]
    }
  }
]