{
  "manageEntity": {
    "action": "Save",
    "entityId": "306097982",
    "entityType": "Track",
    "nonce": "0xd022268c06d1f48f5ebc2d4beaa370f8a32cb34969c51284e7f67add84be6bb0",
    "signature": "0x0f7efe8e0c396c32553fce0e31cc0039ad63846c97b4f80405fc982fdbb67e135e33850b5887812ba6ce28efbfafa4ed93f794f1d7d1169e431757d9e690f4271b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}