下面的这个要用JAVA_matcher要怎么提取{}

{"specId":"10c184f91345c52dc644260ecf47ec98","specAttrs":"318*217*55mm>黑","saleCount":389,"canBookCount":51632,"skuId":5021701727366,"isPromotionSku":false},"318*217*55mm>蓝":{"specId":"324e23c28009c0642b39acc9444a4ae0","specAttrs":"318*217*55mm>蓝","saleCount":960,"canBookCount":51141,"skuId":5021701727365,"isPromotionSku":false}

只需要{}里得内容