{
  "manageEntity": {
    "action": "Save",
    "entityId": "1675626940",
    "entityType": "Track",
    "nonce": "0xab67261a276a2110a5a5a91ecbb09da08c9a957df7a7c3e6f10493537830c725",
    "signature": "0x1ce39872f33ee52388f2e613709b9129085c2a60a7ec52a99b7f7be4e0e78d7537527807ceeb4ae1d4195e098f049a61692e3ecf21ee25662e11e18c3819a0161c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}