{
  "manageEntity": {
    "action": "Save",
    "entityId": "1080991408",
    "entityType": "Track",
    "nonce": "0xdae01e0369262b1cb8c636c8328ec8c6b9aa4eacb09b5abf3a5607cef012fa6c",
    "signature": "0x36a58d276faf19be7bd90075990b6985cc9bb59a6a4e379058cefa6b7c169b912e1012124fb6a45f1ee0a8b3efb6bd2ce729d859df35c82f1d3ba60a229f4ab41b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}