如何提取下面显示的base64值？我试图使用awk {'print $14'}之类的东西，但这并不起作用，因为整个输出是第一项。如果我首先解码base64值，那么我可以使用awk {'print $14'}来最终获得我需要的值。
$ curl -s --request GET http://10.0.10.10:8500/v1/kv/w-key-value
[{"LockIndex":0,"Key":"w-key-value","Flags":0,"Value":"WyAgeyAgICBDcmVhdGVJbmRleDogMTAwLCAgICBNb2RpZnlJbmRleDogMjAwLCAgICBMb2NrSW5kZXg6IDIwMCwgICAgS2V5OiB6aXAsICAgIEZsYWdzOiAwLCAgICBWYWx1ZTogMSAgICBTZXNzaW9uOiBhZGY0MjM4YS04ODJiLTlkZGMtNGE5ZC01YjY3NThlNDE1OWUgIH1d","CreateIndex":4080,"ModifyIndex":4080}]