{
  "manageEntity": {
    "action": "Save",
    "entityId": "2057933659",
    "entityType": "Track",
    "nonce": "0xd8f9a21d3f381fca322296cfd649986f4e192ba146855b7c3d9d12908f0243ad",
    "signature": "0x92cc969753816ddb4a41fd7d0c32dad0b283618833ec589147a5cf70f42691a66ce76357d3c456ad0499e7fd88e8fd961e80f4ae1949e173d9707b81c0f69f241b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}