try{
  const result = await Qworum.getData(['a data']);
  if (result instanceof Json){
    console.info(`The read operation was successful, the result is: ${JSON.stringify(result.value)}`);
  } else {
    console.info(`The data has not been set yet. Did you call Qworum.getData(['a data']) beforehand ?`);
  }
}catch(error){
  console.error('An unexpected error has occurred during the read.');
}