{
  "manageEntity": {
    "action": "Save",
    "entityId": "954754067",
    "entityType": "Track",
    "nonce": "0xe59ae7d66da448968f7ae04d47e357f2e1afab42a214259df36af262deb40cd4",
    "signature": "0x289bf54432bb85c008bbe2a99a8f3d6891c6e0c17e846f1fec2bdfd8918ae7f57a8f45349f8147313bac602191f141ebc38c728910ac957d4e6976d417c84e421b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}