{
  "manageEntity": {
    "action": "Save",
    "entityId": "1095476",
    "entityType": "Track",
    "nonce": "0x7a128ed985d5aa26340625e3b411c2d0295660c43ccdbaf74699adfc07023d66",
    "signature": "0x3e6481376aae338063bbeeb819847f77f6de67bc8e3bc38374c413fc4dcbbab628a3ddf643c94188000eed05c5ddbd43c5dd987d724b2a1124822b7671d053bc1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}