diff --git a/client.go b/client.go
index 14cfa5f..cdba6a7 100644
--- a/client.go
+++ b/client.go
@@ -51,6 +51,7 @@ type Config struct {
 	UserAgent     string
 	Timeout       time.Duration
 	TenantID      string
+	Actor         string
 	Cardinalities map[string]int
 	Labels        LabelPool
 	ProtobufRatio float64
@@ -204,6 +205,9 @@ func (c *Client) sendQuery(q *Query) (httpext.Response, error) {
 
 	r.Header.Set("User-Agent", c.cfg.UserAgent)
 	r.Header.Set("Accept", ContentTypeJSON)
+	if c.cfg.Actor != "" {
+		r.Header.Set("X-Grafana-User", c.cfg.Actor)
+	}
 	if c.cfg.TenantID != "" {
 		r.Header.Set("X-Scope-OrgID", c.cfg.TenantID)
 	} else {
diff --git a/loki.go b/loki.go
index 356ff01..11202b4 100644
--- a/loki.go
+++ b/loki.go
@@ -146,8 +146,9 @@ func (r *Loki) config(c goja.ConstructorCall) *goja.Object {
 	}
 
 	r.logger.Debug(fmt.Sprintf(
-		"url=%s timeout=%s protobufRatio=%f cardinalities=%v randSeed=%d",
+		"url=%s timeout=%s protobufRatio=%f cardinalities=%v randSeed=%d, userAgent=%s, timeout=%s, tenant=%s, actor=%s",
 		&config.URL, config.Timeout, config.ProtobufRatio, config.Cardinalities, config.RandSeed,
+		config.UserAgent, config.Timeout, config.TenantID, config.Actor,
 	))
 
 	if config.TenantID == "" {
@@ -225,6 +226,10 @@ func (r *Loki) parseConfigObject(c *goja.Object, config *Config) error {
 		config.TenantID = v.String()
 	}
 
+	if v := c.Get("actor"); !isNully(v) {
+		config.Actor = v.String()
+	}
+
 	if v := c.Get("cardinalities"); !isNully(v) {
 		if err := rt.ExportTo(v, &config.Cardinalities); err != nil {
 			return fmt.Errorf("cardinatities should be a map of string to integers: %w", err)