{
  "manageEntity": {
    "action": "Save",
    "entityId": "1725615434",
    "entityType": "Track",
    "nonce": "0x8beea770970a49f1141b0322a72096cf6176541c002a05dd32a2ccead39bd503",
    "signature": "0xcc9b1c36014131d6e4f4ca07f2729f7c3fb88d21ca210782f0b7ce2edfcc37aa0cc2d5611365703ccf004900a3477768b20930773632f87adb907c1c594a70c41c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}