{
  "manageEntity": {
    "action": "Save",
    "entityId": "172870803",
    "entityType": "Track",
    "nonce": "0x24ec9cc735184309b06c3f552623ffee65865779393587c434286a8150b62acb",
    "signature": "0x0150a1b74ac17672a270d3ca2cc778adfa8a73e35135657ba31cf145aedd5c217d3987a3257eb90d49f9f22bf330cb7b7bf87e47ff2290b0e667d41b9d5fb61d1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}