{
  "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": "0x3435da8e54bbb6ed7d4e2d70fceb840cd8d9a399ab34ba473cd7c9a4eb0f509c",
    "signature": "0x7df81e5b0e1c8096c87fb17a2f2a7f241a9825a8045f1e23919e388c64f2998838ec84843f3d00abe043e2f0ebfaa812c8b7221e80bfcd0f2adb47c1d2faf5101c",
    "signer": "0x519f59B3efef0Df45928E79086d979C0C4A40Fee",
    "userId": "272809645"
  }
}