{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080270874",
    "entityType": "Track",
    "nonce": "0xa8a3d5ad0422d1d950d79b0abb92152c9779cb19515098b4c9a6711d8aeefd61",
    "signature": "0x980dbdd3664cf77a97f31928be25609db8be73dc0bb29182da0a9e248c989c365df60cd917ed3fbbb6940322325e3b42f460cb60960133aed5ecd701b138899b1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}