截取一个数，但是又不想要后面的累赘...恳请大神指点一下。

{"tag":"lcp-1","time":1471513789,"data":{"timestamp":1471513789,"payload":9}}

我想截取到payload后面这个９，但是又不要“｝｝”，请问能用一句命令来搞定吗？

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echo '{"tag":"lcp-1","time":1471513789,"data":{"timestamp":1471513789,"payload":9}}' | cut -d':' -f6 | cut -d'}' -f1

echo '{"tag":"lcp-1","time":1471513789,"data":{"timestamp":1471513789,"payload":9}}' | perl -n -e'/.*payload\":(\d+)\}\}/ && print $1'