{
  "manageEntity": {
    "action": "Save",
    "entityId": "1475808196",
    "entityType": "Track",
    "nonce": "0x251f6fc48f1a6d17884442d902532fdb08022c0527e2ceca68a4db68eb90d7cc",
    "signature": "0x97760b95f289bf57078165ac0ba44cc62d4f782e1fec5eb737a7b9603bc45d1932c0db778b34dc5a525a15f1af47175f4a49e4bd95e37a2cfa8bdcc70d927b9b1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}