Javascript：使用额外的花括号解析JSON

I have this JSON object:

我有这个JSON对象：

var dataObj = { data: '\n{ sizeMap:{\nxSizes: "REGULAR|SMALL", \ncurrItemId: "",\ncurrItemSize: "",\nmanufacturerName:"Rapid",\npartNumber: "726G", \nsuitStyle: "R",\nhasSC: "",\nhasInseam:""\n}\n}',type: 'text',next: null,prev: null };
var da