{
  "manageEntity": {
    "action": "Save",
    "entityId": "162732327",
    "entityType": "Track",
    "nonce": "0x46385495b6a62827e503f017869a68f41ec23ede85c3ae446e6bab672a283b1b",
    "signature": "0x5976d99c8a5f6c40c2052f6413702c6b0299cd25868e2d75561df335eb0c66fa348d7c1f367b4f8f929bdff5bc6724dd7dc71186f99f6cf0a5b2def43bd653e21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}