diff --git a/app/controller/cutil/form.go b/app/controller/cutil/form.go
index 958d8fa8..90508e0e 100644
--- a/app/controller/cutil/form.go
+++ b/app/controller/cutil/form.go
@@ -35,8 +35,7 @@ func ParseFormAsChanges(rc *fasthttp.RequestCtx) (util.ValueMap, error) {
 }
 
 func parseJSONForm(rc *fasthttp.RequestCtx) (util.ValueMap, error) {
-	var ret any
-	err := util.FromJSON(rc.Request.Body(), &ret)
+	ret, err := util.FromJSONInterface(rc.Request.Body())
 	if err != nil {
 		return nil, errors.Wrap(err, "can't parse JSON body")
 	}
diff --git a/app/lib/log/encoder.go b/app/lib/log/encoder.go
index 228b708e..32270345 100644
--- a/app/lib/log/encoder.go
+++ b/app/lib/log/encoder.go
@@ -36,8 +36,7 @@ func (e *customEncoder) EncodeEntry(entry zapcore.Entry, fields []zapcore.Field)
 	out := b.Bytes()
 	b.Free()
 
-	data := util.ValueMap{}
-	err = util.FromJSON(out, &data)
+	data, err := util.FromJSONMap(out)
 	if err != nil {
 		return nil, errors.Wrap(err, "can't parse logging JSON")
 	}
diff --git a/app/util/json.go b/app/util/json.go
index 1d6e1d49..06ada3c7 100644
--- a/app/util/json.go
+++ b/app/util/json.go
@@ -38,6 +38,18 @@ func FromJSON(msg json.RawMessage, tgt any) error {
 	return jsoniterParser.Unmarshal(msg, tgt)
 }
 
+func FromJSONString(msg json.RawMessage) (string, error) {
+	var tgt string
+	err := jsoniterParser.Unmarshal(msg, &tgt)
+	return tgt, err
+}
+
+func FromJSONMap(msg json.RawMessage) (ValueMap, error) {
+	var tgt ValueMap
+	err := jsoniterParser.Unmarshal(msg, &tgt)
+	return tgt, err
+}
+
 func FromJSONInterface(msg json.RawMessage) (any, error) {
 	var tgt any
 	err := FromJSON(msg, &tgt)