How to create ConnectionString for EntitySchemaQuery

Hi.

Our intention is create a console app (C#) using EntitySchemaQuery  that query an entity (like Account or Contact) and gets its rows to populate a local table. 

We are trying to connect our bpmonline using this example:

source: https://www.bpmonline.cz/bpmonlinesdken/UsingEntitySchemaQuery.html

//////////
// Creating a query instance, adding columns and a data source in the query.
Select selectQuery = new Select(UserConnection)
                    .Column("Id")
                    .Column("Name")
                    .From("Contact");
// Executing a database query and getting the resulting dataset.
using (DBExecutor dbExecutor = UserConnection.EnsureDBConnection())
{
    using (IDataReader reader = selectQuery.ExecuteReader(dbExecutor))
    {
        while (reader.Read())
        {
            // Handling the query results.
        }
    }
} 

/////////////

The problem is we do not know how to create the connection string (UserConnection) to our cloud services, https://mycompany.bpmonline.com.

How to create this UserConnection? Someone has an example or may guide us?