{
  "manageEntity": {
    "action": "Save",
    "entityId": "119349990",
    "entityType": "Track",
    "nonce": "0xd061ad737601928aa8c03a5788c531e82c632c235c1f76c8cdf35d2e08b74359",
    "signature": "0xccf2de8ce03c764a5aec88765033ee78b3402ca349828efd23d39fd0c6d8bbd53bc070d663dc480449cc883016147cee8bce90af00a24a9373ea5dabf2e2d7d71c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}