{
  "manageEntity": {
    "action": "Save",
    "entityId": "2078784354",
    "entityType": "Track",
    "nonce": "0xba008619972d815f2e2cd8a2d0aa649cab84db9ea164fac18ed9ac64cfcadc2d",
    "signature": "0x733e174069927e29fd8125173030aaa8a4ac46eddef355e4c0f71084eee788807311f06d1436bafa6fcee170b14d93fda98799da291a384dea9f4cdfa8d0f0b41c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}