Swift: Parsing JSON, NSDictionary of NSDictionaries

I am trying to parse a `JSON` file with some tags and sub tags. I am doing this by creating a `NSDictionary`. From this I create a `NSDictionary` from a certain tag. This `NSDictionary` contains the properties I want to parse. So I am trying to loop over the `NSDictionary`, but it is not working. I tried many variants of this, but it keeps giving me compile time errors. ``` var jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(JSONData, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary var devices:NSDictionary = jsonResult.objectForKey("devices") as NSDictionary for device:NSDictionary in devices{ device.objectForKey("id") //etc //etc } ``` I get the following error: ``` '(key: AnyObject, value: AnyObject)' is not convertible to 'NSDictionary' ``` on the for each loop line. I've also tried casting it to NSDictionary after, but then I get the same error. For clarification, this is an example of what my json file looks like: ``` {    "global":{       //etc    },    "user":{ //etc    },    "devices":[       {          "id":16108,          //etc }, { “id”:12310, //etc     }, //etc }, ``` etc obviously means theres more data, this is just a basic outline. I am trying to read the properties of the devices