[
  {
    "id": 1,
    "name": "Jenny",
    "parent_id": 1,
    "age": 2
  },
  {
    "id": 2,
    "name": "Jorge",
    "parent_id": 1,
    "age": 5
  },
  {
    "id": 3,
    "name": "Jan",
    "parent_id": 2,
    "age": 11
  },
  {
    "id": 4,
    "name": "Jack",
    "parent_id": 2,
    "age": 16
  }
]