{"data":{"url":"/uploads/projects/4ee5312bf736b57fb61f2af4ccf93538/ebook.epub?sign=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJQYXRoIjoidXBsb2Fkcy9wcm9qZWN0cy80ZWU1MzEyYmY3MzZiNTdmYjYxZjJhZjRjY2Y5MzUzOC9lYm9vay5lcHViIiwiVW5peE5hbm8iOjE3NzY4MDA1OTAyMDYxNzM3MDAsImV4cCI6MTc3NjgxODU5MH0.1cn3ACBCzm6ma6f23Xv2AoXjOHnT6r_IEsCqUMdV4DY\u0026attachment=Applied+Economics+-+Sowell.epub"},"errcode":0,"message":"获取电子书下载链接成功"}