python json 报错

Question

ss='"data":[{"amount":"400","financeAmount":"400万","financeAmountUnit":"CNY","financeDate":1514649600000,"newsUrl":"http://www.lieyunwang.com/archives/447914","participantVos":[{"entityId":117,"entityName":"联想之星","entityType":2,"investmentId":181676}],"phase":"ANGEL"}]'
sss=json.loads(ss)
Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/__init__.py", line 354, in loads
    return _default_decoder.decode(s)
  File "/usr/local/Cellar/python/3.6.5/Frameworks/Python.framework/Versions/3.6/lib/python3.6/json/decoder.py", line 342, in decode
    raise JSONDecodeError("Extra data", s, end)json.decoder.JSONDecodeError: Extra data: line 1 column 7 (char 6