This app demostrates how to use the Sync library in Swift, it also uses Alamofire, although that's not a requirement.

JSON

{
  "meta":{
    "min_id":"57030525",
    "code":200,
    "max_id":"57030547",
    "more":true
  },
  "data":[
    {
      "created_at":"2015-04-06T15:07:06Z",
      "text":"Hello World!",
      "id":"57030547",
      "user":{
        "username":"albarjeel1",
        "created_at":"2015-03-28T13:01:31Z",
        "id":"347326"
      }
    }
  ]
}

Model

Sync

Sync.changes(
    json["data"] as Array,
    inEntityNamed: "Data",
    dataStack: self.dataStack,
    completion: { error in
        completion()
    }
)