postman也不行也是报的这个错

{"button":"[{\"name\":\"礼包集合\",\"sub_button\":[{\"type\":\"click\",\"name\":\"领取礼包码\",\"key\":\"58fdfaa9e1965\"}]},{\"name\":\"账号服务\",\"sub_button\":[{\"type\":\"view\",\"name\":\"找回密码\",\"url\":\"http:\\\/\\\/api.hzyotoy.com\\\/index.do?mod=getpasswd\"},{\"type\":\"view\",\"name\":\"账号注册\",\"url\":\"http:\\\/\\\/api.hzyotoy.com\\\/index.do?mod=reg\"},{\"type\":\"click\",\"name\":\"防挂验证\",\"key\":\"but_23\"}]},{\"name\":\"新服推荐\",\"sub_button\":[{\"type\":\"click\",\"name\":\"新区预约\",\"key\":\"but_31\"},{\"type\":\"view\",\"name\":\"观看直播\",\"url\":\"http:\\\/\\\/www.huya.com\\\/24614174\"}]}]"}