db.json

{
  "users": [
    {
      "id": "40",
      "firstName": "Alex",
      "age": 13,
      "companyId": "2"
    },
    {
      "id": "41",
      "firstName": "Nick",
      "age": 40,
      "companyId": "2"
    },
    {
      "firstName": "Samantha",
      "age": 25,
      "companyId": "1",
      "id": "S1TKHzuwl"
    }
  ],
  "companies": [
    {
      "id": "1",
      "name": "Apple",
      "description": "iphone"
    },
    {
      "id": "2",
      "name": "Google",
      "description": "search"
    }
  ]
}