{
  "manageEntity": {
    "action": "Save",
    "entityId": "227854",
    "entityType": "Track",
    "nonce": "0x902ebb78b8bc48edbfb4386f26830c92d5eaed117aaa9c0f3af2c8c61acc33ae",
    "signature": "0xb77d7efa0d262344e5e53d7210d89ef4b7d26196e835314dcd455b53b669894a419ce411fc9ae55d8b89ed9b9504bef91139590e032a1dbf27c88a4026547b881b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}