{
  "manageEntity": {
    "action": "Save",
    "entityId": "1360540403",
    "entityType": "Track",
    "nonce": "0xc4d30888a8a13ad817d11aef21650ee62f2f24b532fcc512617967604ebf9b7a",
    "signature": "0x85f4b98b201d3ad13de6e4ba748cd79a02462547e6a5bf7d6b2701c486b8711320e4df04d8e652523c0ed0446341921aba34d982cd8d55ca51dfb785559224e31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}