如何解码Haumi API导出的Miband7健康数据JSON？

我正在开发一个展示穿戴设备（重点是小米手环7）健康数据统计图表的网站，调用Haumi API可以成功获取数据，但返回结果中的data和data_hr字段处于编码状态，无法正常解码；仅summary字段可通过Base64解码。由于该API来自基于SQLite3的Zepp Life安卓应用，我推测这两个字段采用了类数据库的存储格式。

示例返回JSON如下：

{"code":1,"message":"success","data":[{"uid":"5077903424","data_type":0,"date_time":"2023-07-26","source":264,"summary":"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","uuid":"1868505a-98b8-4e28-98dc-a4ea62b1981e","data":"fgAAfgAA...","data_hr":"/v7+/v7+..."}]}

我有完整的原始数据样本可供参考。

内容的提问来源于stack exchange，提问作者BiteSnail