{
  "manageEntity": {
    "action": "Save",
    "entityId": "1294279867",
    "entityType": "Track",
    "nonce": "0xc3deae9536411f328e9a7257a867e7fe0313c603e730dfb6f61b25a4ab2c967e",
    "signature": "0x06e856bf9f56ca0dfa9836188f91dce5bb99d694e92e0c859c4bdc6c20afb63c5810e8c03f78d419af9660ffd94f12f1b354df9031b518beb8c0e3eaf4d9a4d61c",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}