{
  "manageEntity": {
    "action": "Save",
    "entityId": "94575319",
    "entityType": "Track",
    "nonce": "0x0f511d00beca7ebfd1e51808dcc46671fde0995bda6de84dbc5e4fe2d8f7ada7",
    "signature": "0x0fdaa0815b132da9f3c511b93e9b43b6edf313749def7f498ae89ed9b54ea5e37aff9cde708fc3d7048cb8a6535553fb197a3999f9822b51afc6ab8db8b840b01b",
    "signer": "0x95053e208ed4683dC71E3025336b339dc6C13f1B",
    "userId": "90610656"
  }
}