{
  "manageEntity": {
    "action": "Save",
    "entityId": "1695727516",
    "entityType": "Track",
    "nonce": "0xf4872112f256c42aada721a418b744f16b083a1b7f2011be975a4ba042885d26",
    "signature": "0x9504beb766be52e22266f6a09714b16a1982b26071b6164033a27e4498a46c702c1cf527a77c9be18964889df429fcd4e787adde89ad92441d8d9d8cb31801a71c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}