{
  "manageEntity": {
    "action": "Save",
    "entityId": "790964072",
    "entityType": "Track",
    "nonce": "0x53d670f50c37da8088c85135a46fc58722bbb7b278c0a4fb5fe6da6516e5423a",
    "signature": "0x61b782cce691d282384734291cda0017beeebfe86683739ca557f1ed6794094b7a7d59fdbaa28ac79230695d286b74abf6eecd9ee099738749de3ffbea5753d51c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}