{
  "manageEntity": {
    "action": "Save",
    "entityId": "698863101",
    "entityType": "Track",
    "nonce": "0x911e0450dc32e9693215b4fa19f78f815ac7c312d6828a9ad905d0dc8c4f513e",
    "signature": "0x99fc6a39c354287074a42eabfcf4d1efe7f8c75cfdb38a44a5015ce7b13606dc71f6a3745102f5ddb0b745958fea06e000739698786e5d8ab95abddf5961552d1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}