{
  "manageEntity": {
    "action": "Update",
    "entityId": "305604088",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6ffcfeb2c12c080ca26e03b60fadf4f6d8e23d95b9a623df78733933ad832251",
    "signature": "0x4b51ef457ff3a0375343cbc3168029fa529e64a0d38297808b4cd620bcd439ba78426ed1eb745c454ae895bae26921455d133cf99a21f8adadebe0c83519c6a71c",
    "signer": "0x983C28231d20A0d1bdb917C0a3E89325d0Cc2cA3",
    "userId": "305604088"
  }
}