EIP712 not support type string[] but Struct[]?

[shaneing]

ethermint/ethereum/eip712/eip712.go

Lines 326 to 354 in 1a5b64d

	if fieldType.Kind() == reflect.Struct {
	var fieldTypedef string
	if isCollection {
	fieldTypedef = sanitizeTypedef(fieldPrefix) + "[]"
	} else {
	fieldTypedef = sanitizeTypedef(fieldPrefix)
	}
	if prefix == typeDefPrefix {
	typeMap[rootType] = append(typeMap[rootType], apitypes.Type{
	Name: fieldName,
	Type: fieldTypedef,
	})
	} else {
	typeDef := sanitizeTypedef(prefix)
	typeMap[typeDef] = append(typeMap[typeDef], apitypes.Type{
	Name: fieldName,
	Type: fieldTypedef,
	})
	}
	if err := traverseFields(cdc, typeMap, rootType, fieldPrefix, fieldType, field); err != nil {
	return err
	}
	continue
	}
	}

[shaneing]

ethTyp := typToEth(fieldType)
if len(ethTyp) > 0 {
	if isCollection {
		ethTyp += "[]"
	}
        // ...
}