{
  "manageEntity": {
    "action": "Save",
    "entityId": "997999109",
    "entityType": "Track",
    "nonce": "0x62c83f0235bb761eebb0d5227ae10d8d04061747705e0e84de27ca9a8138d5d4",
    "signature": "0x692697eb7876a826c06fb9af37708a5a1244f0dd50dcba9e6795aa9cf4e7caf14ebf97368377862acba38afe8716886eb16419bf6221907db7cd41c52a0531d51b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}