{
  "manageEntity": {
    "action": "Save",
    "entityId": "1119002",
    "entityType": "Track",
    "nonce": "0x4a5da169762ce9f27af587e7f8a5eb9792e58f0af5ea791053c007bf4e713525",
    "signature": "0x8074dbdd5bf12779608ce19d744e41487ef4451de737de4f5a478fa049257678125b086b4fc6691927bd348cdf7376105267460da47f754500c376ef265167201b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}