{"table2": [ {"column1": value, "column2: value, ... }, {"column1": value, "column2: value, ... }, ...],
{"table3": {"column1": value, "column2: value, ... }
}
{"table2": [ {"column1": value, "column2: value, ... }, {"column1": value, "column2: value, ... }, ...],
{"table3": {"column1": value, "column2: value, ... }
}