{
  "manageEntity": {
    "action": "Save",
    "entityId": "1100950871",
    "entityType": "Track",
    "nonce": "0x59231bd5d0a27fc3e3e993a7a33275bf495ab4203b748353a4f06569f9b89a22",
    "signature": "0xc1b24e8923107d084923f70630d3a4dad0075409eec1ded4cf24427fdb69a0486424ec2da2bfc4bacf4712c296127ebe8c166396c349c6da88709441667114431c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}