{
  "manageEntity": {
    "action": "Save",
    "entityId": "1351678213",
    "entityType": "Track",
    "nonce": "0xe941fab89c1e22b6d524ab71c8e4a4ea7228cd0beb15179622d01fd5d52c1afa",
    "signature": "0x17f55bfb3a8c23c56fcce6abd91682c5c1cc936086eec07a0d3d2895889682087b5c4a3a9d746daf15597017f1a393859f5301bf41b1c6fa8ccf777ce60797081b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}