{
  "manageEntity": {
    "action": "Save",
    "entityId": "1496284369",
    "entityType": "Track",
    "nonce": "0x06bd45749588698374e1a8470c1fc98c46129fd9cf58b2d188c0491f4e3c26fc",
    "signature": "0x3bd7bb22b1f7d1b5f68673837da93c399813257670d3c24b5e8362916b3f45eb5817ae2ce1047c574b77a10564dee47ec852420ca4acba35ebff56bc92b353f41c",
    "signer": "0xA6556f98e9bFB15D904562680c6a62517873f675",
    "userId": "532604076"
  }
}