如何打印/转换对象/嵌套哈希到字符串/ json？

Question

FlickRaw lib返回“＃＆lt; FlickRaw :: ResponseList：0x007fbe843a9ea0＆gt;”对象（如果我打印它），应用.to_hash方法后转换为哈希，我可以使用puts打印：

 {"id":"9490885638","secret":"4c05132e6a","server":"7293","farm":8,"dateuploaded":"1376261143",
"isfavorite":0,"license":"0","safety_level":"0","rotation":0,
"owner":"#<FlickRaw::Response:0x007fbe843a9ea0>",
"title":"stolen memories.","description":"Dresden, 2013.\nPlatz vor der Semperoper.",
"visibility":"#<FlickRaw::Response:0x007fbe843b1790>",
"dates":"#<FlickRaw::Response:0x007fbe843bb3a8>", ... }

那么如果我打印它（如果没有看到一些“＃＆lt; FlickRaw :: Response：0x007fbe843a9ea0＆gt;”哈希），如何深度转换返回值以查看所有嵌套值/结构？

P.S。这些对我不起作用[Ruby Hash converted to JSON only shows object names]