Question: Which of the customers, whose Tokyo-based sales representative reports to the Vice President of Sales whose employee number is 1056, has paid the highest payment? List the customer's name, the contact person and calculate the total amount of that customer's total payments.
SQL: SELECT T2.customerName, T2.contactFirstName, T2.contactLastName, SUM(T3.amount) FROM employees AS T1 INNER JOIN customers AS T2 ON T2.salesRepEmployeeNumber = T1.employeeNumber INNER JOIN payments AS T3 ON T2.customerNumber = T3.customerNumber INNER JOIN offices AS T4 ON T1.officeCode = T4.officeCode WHERE T4.city = 'Tokyo' AND T1.reportsTo = 1056 GROUP BY T2.customerName, T2.contactFirstName, T2.contactLastName ORDER BY amount DESC LIMIT 1