How to unmasrshal json in this case?

I have to unmarshal Json(Request, Response Body) in echo framework midleware for ELK, like this code.

var reqJSONBody, resJSONBody map[string]interface{}
if len(*reqBody) > 0 {
	if err := unmarshalJSON(reqBody, &reqJSONBody); err != nil {
		gl.ServiceLogger.Error("error parsing the request body: ", requestURI, err)
	}
	encryptPrivacyField(&reqJSONBody)
}
if len(*resBody) > 0 && resContentType != "" && strings.Contains(resContentType, "application/json") {
	if err := unmarshalJSON(resBody, &resJSONBody); err != nil {
		gl.ServiceLogger.Error("error parsing the response body: ", requestURI, err)
	}
	encryptPrivacyField(&resJSONBody)
}

And it is work,

But, Some URI response to []map[string]interface{} type.

So I got this error.

json: cannot unmarshal array into Go value of type map[string]interface {}

What is the best way to solve the problem?

I solved it by changing:

var reqJSONBody, resJSONBody interface{}
if len(*reqBody) > 0 {
	if err := json.Unmarshal(*reqBody, &reqJSONBody); err != nil {
		gl.ServiceLogger.Error("error parsing the request body: ", requestURI, err)
	}
	encryptPrivacyField(&reqJSONBody)
}

So I have to change encryptPrivacyField method like this:

func encryptPrivacyField(data *interface{}) {
switch reflect.TypeOf(*data).Kind() {
case reflect.Map:
	for _, field := range getPrivacyFieldList() {
		if item, ok := (*data).(map[string]interface{})[field]; ok && item != nil {
			(*data).(map[string]interface{})[field] = db.NewEncString(fmt.Sprintf("%v", (*data).(map[string]interface{})[field]))
		}
	}

	for _, field := range getHashFieldList() {
		if item, ok := (*data).(map[string]interface{})[field]; ok && item != nil {
			(*data).(map[string]interface{})[field] = db.NewHashString(fmt.Sprintf("%v", (*data).(map[string]interface{})[field]))
		}
	}
case reflect.Slice:
	for index, _ := range (*data).([]interface{}) {
		encryptPrivacyField(&(*data).([]interface{})[index])
	}

}
}

Thanks to @mkopriva for the advice.