{
  "manageEntity": {
    "action": "Save",
    "entityId": "1228178382",
    "entityType": "Track",
    "nonce": "0xdccaf9cfdbad855d61fcdd345683fd9d4981dfc0c339bd2bc8be18938e9b46d0",
    "signature": "0x8f581e81cdfd7bab27d2ca1cde251f1a06a72a108a6b10e475f433524b45685c20c0886dbc0257bb01c269cb2c427228070a7e73e6a86ee79609c2b6257d97041c",
    "signer": "0xD9f3542381b9076C511a8E29fB819A5454AAbDB5",
    "userId": "202396697"
  }
}