{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136961293",
    "entityType": "Track",
    "nonce": "0x17446d39b8adba5b5936d60d0b001c9dd039b8b6bd8d7d61256da84616f6daad",
    "signature": "0x9ce2aa8807a829a71b135e38ce165198d6f841c3f19e78f78e5ad28e963d7229439b639f4ff9f74d9bab9c3833207b1649fcbab2300bc6a6e38f18bb9ceef9f51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}