{
  "manageEntity": {
    "action": "Save",
    "entityId": "169030",
    "entityType": "Track",
    "nonce": "0x33460548208ce6a0ae4f5215536cf592c93fa4dd5faaf18af294c13be883a1f9",
    "signature": "0x171b114363aec58f2bf5490cf606e3620d7f3080b36c148deb294574b6fdf2b141a7e6dca46981272905ab8049eb3295756e54f6ed6d51c229fccd5416a884371b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}