{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajezdxvw2lsrkjahz3bgejy34hpgccnzmzsz7aho3joqbk4hj3iyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393},{\"type\":\"playlist\",\"playlist_id\":833781591},{\"type\":\"playlist\",\"playlist_id\":1919740850}]}}}",
    "nonce": "0xe894b4f209fb699d90a0c4180877c56e08963973fd975b01766c31fe3f5c301e",
    "signature": "0xf505cd07782e97ca170ca09dcfa84f4577b8c2c5d8e46ccce0c2e086b9bd35c21ad964561f270b89342cfa92901668f74bb3181ac778dd48c9624102a1f8f9181c",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}