{
  "manageEntity": {
    "action": "Save",
    "entityId": "1424379453",
    "entityType": "Track",
    "nonce": "0x0ae0ecec0f2da5b9bf6e118172132444675d7aac9af3676f576e3ae176d3a242",
    "signature": "0x19aada805a045ead96621f89f163a1642319ca1a37248cac0e530e7e09eb2b1874dd9b720326e7166298ad2e857983617f3053cacde2da6786d5b1cf94cd04731b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}