{
  "manageEntity": {
    "action": "Save",
    "entityId": "541164",
    "entityType": "Track",
    "nonce": "0xc79849af41496c75750892b5af07ba160a454c12aa21bca1238a35b09efa124c",
    "signature": "0xbc60d8778d737a4a975ec6257c7c808fd5ab18645674a1b667c684a1f8579cb82a6d8579632ef0ae5a47310896c0a0ab3bb7bde5ce5ff128523a5086e27b0c211c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}