DmitrySolomennikov

type LastStruct struct {
	testName string
	hhhh     int
}

type NextStruct struct {
	someName  string
	someName2 map[string]*LastStruct
}

type SomeStruct struct {
	nameField string
	field1    map[string]*NextStruct
}

...

	data := new(SomeStruct)
	data.field1 = make(map[string]*NextStruct)

	data.field1["foo"] = new(NextStruct)