{
  "manageEntity": {
    "action": "Save",
    "entityId": "1826290412",
    "entityType": "Track",
    "nonce": "0x15eb65d5f32471e0f86cd2c25bf205e8760d251d5ecf91aefbbdda33afd8cda9",
    "signature": "0xcbd8e9462518d5a2dc9e7935f9934a8e318796e885c9d26376b80c8eac7630f81c720262d8e4201b1d0efd1875d414ed31d4e27a558f9f2d9b2790f73cb50e5f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}