fieldalignment of all structs to save memory

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

util/token/jwt/jwt.go

@@ -12,11 +12,10 @@ import (
 
 // authClaims to be encoded in the JWT
 type authClaims struct {
-	Type     string            `json:"type"`
-	Scopes   []string          `json:"scopes"`
 	Metadata metadata.Metadata `json:"metadata"`
-
 	jwt.StandardClaims
+	Type   string   `json:"type"`
+	Scopes []string `json:"scopes"`
 }
 
 // JWT implementation of token provider
@@ -51,7 +50,7 @@ func (j *JWT) Generate(acc *auth.Account, opts ...token.GenerateOption) (*token.
 	// generate the JWT
 	expiry := time.Now().Add(options.Expiry)
 	t := jwt.NewWithClaims(jwt.SigningMethodRS256, authClaims{
-		acc.Type, acc.Scopes, acc.Metadata, jwt.StandardClaims{
+		Type: acc.Type, Scopes: acc.Scopes, Metadata: acc.Metadata, StandardClaims: jwt.StandardClaims{
 			Subject:   acc.ID,
 			Issuer:    acc.Issuer,
 			ExpiresAt: expiry.Unix(),