{
  "manageEntity": {
    "action": "Save",
    "entityId": "2009381259",
    "entityType": "Track",
    "nonce": "0xf641792157589c9392a2b5dee526e68b60ca95671a70bd40b4d8a1419f740dc2",
    "signature": "0x45275044747f76fc504cd35917e41842434b357d96765df4559f254ffad5febf66fb6ecacec52d1b34227ec0b701932b664f00cea789b25443700bd9caeb0dda1c",
    "signer": "0xD586F3Fa8b52760A9b982EE658a51dc293559a62",
    "userId": "867360766"
  }
}