如何在iOS Swift 3中将JSON-String转换为字典数组

I have this String

我有这个字符串

[{\"label\":\"Issue Name\",\"value\":\"my dirst iOS \",\"_id\":\"issueName\"},{\"label\":\"Issue DueDate\",\"value\":\"15-12-2016\",\"_id\":\"dueDate\"}]
[{\"label\":\"I