Swift nested "if let" seems like madness - is it?

I have been advised to use if lets when examining optional variables. This makes sense, but I have ended up with the following code. It works, but it looks like utter madness! Please tell me that there is a better way.

( users: [ JSONValue ]? ) in

if let jsonValue: JSONValue = users?[ 0 ]
{
    if let json: Dictionary< String, JSONValue > = jsonValue.object
    {
        if let userIDValue: JSONValue = json[ "id" ]
        {
            let userID: String = String( Int( userIDValue.double! ) )
            println( userID )
        }
    }
}