{
  "manageEntity": {
    "action": "Save",
    "entityId": "1704270079",
    "entityType": "Track",
    "nonce": "0xc2246aa9d0d6192df09ea0df2815fecff7dbd5beca0f16f3942b551ba04340c2",
    "signature": "0xffc049130b2096a2c37b9eb6ec46fab1bcff814b316b6be59ac2756d02573a347187517c78d93933c99c47924904403bd1dcc23eb26406b768387fd8dcc036251b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}