{
  "manageEntity": {
    "action": "Save",
    "entityId": "1181397291",
    "entityType": "Track",
    "nonce": "0x2ad5113feb0ca7c80b6ea2e92c091ea01004c4583de70df631833f9a18c83ff1",
    "signature": "0x861183155730ca63248e93cdd84054640605b8b79a5c899413c17ccb1a1e83224d81b7684f7d4745d21d35dc01974002d0cc026f98c7c2f66e97389cd597be231c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}