{
  "manageEntity": {
    "action": "Save",
    "entityId": "1684033962",
    "entityType": "Track",
    "nonce": "0x722a88de44d87b7d6831c68eb870e37ea985d62509237ad0eb25db136cb56f69",
    "signature": "0xfb062b46166043f592cc05d550ed3ca095de58da16f75d277d9ca79da98b90ba254fce7012dd4801635850333ed22ca17905a2c35c550cc88ca5774ef79414c61b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}