Crazy JSON parsing in Swift

JSONParse.swift

let twitterUser: String?
if let data = serverResponse {
    if let json = try? NSJSONSerialization.JSONObjectWithData(data, options: []) as? [String: AnyObject] {
        if let user = json?["user"] as? [String: AnyObject] {
            if let accounts = user["accounts"] as? [AnyObject] {
                if let twitter = accounts.first as? [String: AnyObject] {
                    twitterUser = twitter["user"] as? String
                }
            }
        }
    }
}