{
  "manageEntity": {
    "action": "Update",
    "entityId": "194963084",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafffiizwofuays4nvv7ihfxad74kxblay5nnxuzs777zoxnyzxivq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":684691407},{\"type\":\"playlist\",\"playlist_id\":2073514240}]}}}",
    "nonce": "0x3f2317f3558284aa5b842b1eb132166781493bb3895ea4acbecea78aae0d5d88",
    "signature": "0x827a32403118d422ebc42fea2c6e23e0e9682ff70148951144f3d939af69d1f446ff8de23aefd4f63b24f01adfb69b26792b8b10684ed0ee058b383f4f79ce321c",
    "signer": "0x52C54744FeC93B156A460Db7FccF10e22b6FEdf0",
    "userId": "194963084"
  }
}