{
  "manageEntity": {
    "action": "Save",
    "entityId": "1051605381",
    "entityType": "Track",
    "nonce": "0x95e0213eb23f6c75c523549cf2b3f9ca02b9e8a08171df3d42545b41cd58824c",
    "signature": "0xc9e8536a2609024cc351a2359c495f2e02302447384a13f9611f1f391dc6fac31725b905745758f91cbfaf1213c6ac9c547eb712126a16072b6a51127fc4ce291c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}