{
  "manageEntity": {
    "action": "Update",
    "entityId": "351593101",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9ae315ea5b675c95169937571a082795dc3845d5aeaf0d149b95e206361ededc",
    "signature": "0x7927d20fcfa067e75cab3f6918469e281692efba137ccf8dec982153230c9a37499bd26c3fd4029c7079f0fc225d3b1645bccf6bcd944cf0857db06297a31c051b",
    "signer": "0x4aA57285e5FEd4Ca36a6858d774b4d17b3694adB",
    "userId": "351593101"
  }
}