{
  "manageEntity": {
    "action": "Save",
    "entityId": "60324",
    "entityType": "Track",
    "nonce": "0xfb300a3ff19abf19ab162b0342c239d23e15aca4c1fa3267f8eda3ea00429239",
    "signature": "0x2d46dd45ef0b243638431da5c3a7318c2da23660a60e63a8453d4169d034c7fa75b22fcda5ece36b6f6680b7af7f2a0d8646c716088dcbda03dfd7c57eb638b11c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}