{
  "manageEntity": {
    "action": "Save",
    "entityId": "1693738396",
    "entityType": "Track",
    "nonce": "0x06831edf778c84e79b972c5da5a9dfe9d680965eaf3919c7b6a56987d12ca592",
    "signature": "0x6efee46cc396a848669f69293b56bcfda5cd2db6beb9c2af958f1e68d27f97a00fba1a0e4dcbb3b199fefb5f382616fdc1d675c1cb65227a038d9d4abd8caa6e1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}