public async Task <string> Handle(Command request, CancellationToken cancellationToken)
{
var parameters = new Dictionary <string, object>()
{
{ "folder", request.folder },
{ "timestamp", request.timestamp },
{ "transformation", request.transformation },
};
var signature = await photoAccessor.GetSignature(parameters);
return(signature);
throw new Exception("Problem in get signature Photo handler");
}