{
  "manageEntity": {
    "action": "Update",
    "entityId": "354011310",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc31895b648003664ae55933838220bab1de4df2910018b6bc7bd92590e5485cf",
    "signature": "0x0c543a796ee7ea431558728f6917f5754789e2469636ad23775c4cf7fb430c037aa9d39ac1d8e65b8567e6fef2fb10caa93919d07c17662fa20a93f5cc75d7c91b",
    "signer": "0xC2CF6f49853F6F1108E64Ec81CA00F940D5B819D",
    "userId": "354011310"
  }
}