{
  "manageEntity": {
    "action": "Save",
    "entityId": "1694263356",
    "entityType": "Track",
    "nonce": "0x0ad25ed35a29621e4a425914b9555ca956633f02e3c6c64822c990fefb29f5f1",
    "signature": "0xf99311be5547a779818fe16a6d37dd7331e3b3d1fd8c6eaa084a2ff88bed32c211313d4ea9020c07b86cb251a6910b5052101114bb33ea87d8d3465a354dbc2a1b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}