gistfile1.txt

BEFPRE:
{
  "__v": 0,
  "screen_name": "Tam",
  "email": "test@test.com",
  "name": "Tam",
  "_id": "511782cab249ff5819000002",
  "created_at": "2013-02-10T11:21:46.000Z"
}

AFTER:

{
  "__v": 0,
  "screen_name": "Tam",
  "email": "test@test.com",
  "name": "Tam",
  "_id": "511782cab249ff5819000002",
  "created_at": "2013-02-10T11:21:46.000Z",
  "stories": {
     "sid": "123",
    "name": "test story"
  }
}

OR EVEN:

{
  "__v": 0,
  "screen_name": "Tam",
  "email": "test@test.com",
  "name": "Tam",
  "_id": "511782cab249ff5819000002",
  "created_at": "2013-02-10T11:21:46.000Z",
  "stories": {
   "_id": "165464646464686",
   "_id": "4687/7646",
  }
}