{
  "manageEntity": {
    "action": "Update",
    "entityId": "272809645",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradr2bsxo2sivykjspkg4n44bvvyckrwada77fsxql77hegqyzigkq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1795117483}]}}}",
    "nonce": "0xa609ec89b371745d3a5344f905bfb58c3d66938ade7cc5385ee53b7f9a5333dc",
    "signature": "0x141ebc39c1f3bbe9dca64dcf18cd075adc441ae9e2a83118e6587b1cffa6fa5a601644fe9d07ba6ba56501f96bb75de39b796d8a5d79480451da0dec181abacd1c",
    "signer": "0x519f59B3efef0Df45928E79086d979C0C4A40Fee",
    "userId": "272809645"
  }
}