{
  "manageEntity": {
    "action": "Save",
    "entityId": "1649705346",
    "entityType": "Track",
    "nonce": "0x60d992d780c9d5fd1bfda0e77a8e0b43443db7e89d2ac74a64e79a9d07a6abb7",
    "signature": "0x7587c0f430de43f1abeec435c36b8f85da512e1437ae8459a18e990ff7282ec20fbac46eeceb2fa90dcc0bae0f3aaddd07be49776ab8d480d1de27a0e5b48f401b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}