db.json

{
  "posts": [
    { "id": 1, "postId": 10, "title": "Hello World", "author": "bob" },
    { "id": 2, "postId": 22, "title": "Python is D Best", "author": "sarah" },
    { "id": 3, "postId": 28, "title": "Show me the data", "author": "john" },
    { "id": 4, "postId": 31, "title": "Hello Friend!", "author": "anna" },
    { "id": 5, "postId": 58, "title": "Do something", "author": "hana" }
  ],
  "comments": [
    { "id": 1, "index": 12, "body": "some comment 1" },
    { "id": 2, "index": 3, "body": "some comment 2" },
    { "id": 3, "index": 23, "body": "some comment 3" },
    { "id": 4, "index": 43, "body": "some comment 4" },
    { "id": 5, "index": 56, "body": "some comment 5" },
    { "id": 6, "index": 10, "body": "some comment 6" },
    { "id": 7, "index": 34, "body": "some comment 7" },
    { "id": 8, "index": 43, "body": "some comment 8" },
    { "id": 9, "index": 56, "body": "some comment 9" },
    { "id": 10, "index": 80, "body": "some comment 10" }
  ],
  "profiles": [
    { "id": 1, "index": 45, "firstName": "Bob", "lastName": "Rogers" },
    { "id": 2, "index": 38, "firstName": "Marco", "lastName": "Gallardi" },
    { "id": 3, "index": 56, "firstName": "John", "lastName": "Rose" },
    { "id": 4, "index": 3, "firstName": "Sarah", "lastName": "Tomasz" },
    { "id": 5, "index": 23, "firstName": "Anna", "lastName": "Kowalowski" }
  ]
}