JSON unflatten

{
  "id": 102,
  "name": "Mi 13 Ultra",
  "metadata": "{\"RAM\":\"12GB\",\"Storage\":\"12GB\",\"Color\":\"Green\"}",
  "stock": 68,
  "price": 699.99,
  "featured": true,
  "reviews.0.id": 897,
  "reviews.0.userId": 123,
  "reviews.0.rating": 9,
  "reviews.0.content": "Good",
  "reviews.1.id": 426,
  "reviews.1.userId": 75,
  "reviews.1.rating": 8,
  "reviews.1.content": "Not bad"
}

{
  "featured": true,
  "id": 102,
  "metadata": {
    "Color": "Green",
    "RAM": "12GB",
    "Storage": "12GB"
  },
  "name": "Mi 13 Ultra",
  "price": 699.99,
  "reviews": [
    {
      "content": "Good",
      "id": 897,
      "rating": 9,
      "userId": 123
    },
    {
      "content": "Not bad",
      "id": 426,
      "rating": 8,
      "userId": 75
    }
  ],
  "stock": 68
}