{
  "manageEntity": {
    "action": "Save",
    "entityId": "626190130",
    "entityType": "Track",
    "nonce": "0x6589ff10e1dedfd417e65d94ceca4eb7854e5476bbd366175767a3c674d11ab1",
    "signature": "0x9886c848c03c753ccc7d8c7fc42be42c03a4a3c58013af2de29ebbdf06b95033600397591e844f30e1e74c2639862a35ec012a89bc77798fe8dee29d30ecd3801b",
    "signer": "0x48a006fC89FEf065AAB7A5769519625870833CC6",
    "userId": "128172"
  }
}