Stripe Alamofire响应看起来像数组，元素用分号分隔

I am making an Alamofire request but getting an odd response. (Swift 3)

Alamofire.request(url, parameters: params).validate(statusCode: 200..<300).responseJSON { response in

        if let result = response.result.value  {
            let JSON = result as! NSDictionary
            print("JSON: \(JSON)")

        }

This prints the following:

JSON: {
    message = "Payment has been charged";
    status = Success;
}

Looks solid, but I'm having trouble with two pieces of this response. First off, what is the type of this response. Array? Any? Dictionary? Second, how would I access an element in it. For instance, I want to check to see if the status equals Success.

The last piece of information I have is that my backend (in PHP) produces this with:

$response = array("status"=>"Success","message"=>"Payment has been charged");

Thank you for any insight!