{
  "manageEntity": {
    "action": "Save",
    "entityId": "111306255",
    "entityType": "Track",
    "nonce": "0xd4394fe2a29b1335fdd0c60b8a34dbdce1837e98c29573b1e10a026e4b8c4f4a",
    "signature": "0xcdbfbc6695a56eafc2902cee89fcef4212be4bd7c4f4f9e2dc9d2a14e65461c465de19d8ba4e35e9ae5f5d3b16bd66e0b6b129a241a67d407c45eb5226fe75fc1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}