{
  "manageEntity": {
    "action": "Save",
    "entityId": "1913667456",
    "entityType": "Track",
    "nonce": "0xe7030b3cb5f1a044581b412780815f8b92bf36508d59aa0ef6dd0aef16bf853d",
    "signature": "0x95a9183527e1b1dc0f53e0ceb04b605f0ab489211d09eed6ff94910afdf3adac3d428ccb8b163241e21266e6408beec2ea147fa5320ae16d993e9fdc3d833f661b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}