diff --git a/licence/licence.go b/licence/licence.go
index 1dece3f..38d6de3 100644
--- a/licence/licence.go
+++ b/licence/licence.go
@@ -58,8 +58,8 @@ var (
 
 // --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 const (
-	signKey     = "8E853B589944FF7A56BEF02AAA51D6F4"
-	LICENCE_KEY = "TRAIN_LICENCE_KEY"
+	signKey     = "1F36659EC27CFFF849E068EA80B1A4CA"
+	LICENCE_KEY = "BLOCKS_KEY"
 )
 
 // --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
diff --git a/utils/net.go b/utils/net.go
index 97e951d..1e3bb6b 100644
--- a/utils/net.go
+++ b/utils/net.go
@@ -2,6 +2,7 @@ package utils
 
 import (
 	"bytes"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -121,6 +122,15 @@ func HttpGet(url string) ([]byte, error) {
 	return body, err
 }
 
+func HttpPostJSON(url string, header map[string]string, data map[string]any) ([]byte, error) {
+	bytes, err := json.Marshal(data)
+	if err != nil {
+		return nil, err
+	}
+
+	return HttpPost(url, header, bytes)
+}
+
 func HttpPost(url string, header map[string]string, data []byte) ([]byte, error) {
 	var err error
 	reader := bytes.NewBuffer(data)