diff --git a/auth_utility.go b/auth_utility.go
index 5ad13a5..d931fff 100644
--- a/auth_utility.go
+++ b/auth_utility.go
@@ -19,18 +19,9 @@ const saltSize = 32
 const appName = "korisnicki-centar"
 const secret = "korisnicki-centar-api"
 
-const RoleAdmin string = "ADMINISTRATOR"
-const RoleManager string = "RUKOVODILAC"
-const RoleReporter string = "REPORTER"
-const RoleOperator string = "OPERATER"
-const RoleAdminID uint32 = 1
-const RoleManagerID uint32 = 2
-const RoleReporterID uint32 = 3
-const RoleOperatorID uint32 = 4
-
 type Role struct {
-	name string
-	id   uint32
+	Name string `json:"name"`
+	ID   uint32 `json:"id"`
 }
 
 // TokenClaims are JWT token claims.
@@ -47,11 +38,6 @@ type CredentialsStruct struct {
 	Password string `json:"password"`
 }
 
-var admin Role = Role{RoleAdmin, RoleAdminID}
-var manager Role = Role{RoleManager, RoleManagerID}
-var reporter Role = Role{RoleReporter, RoleReporterID}
-var operator Role = Role{RoleOperator, RoleOperatorID}
-
 // generateSalt returns a string of random characters of 'saltSize' length.
 func generateSalt() (salt string, err error) {
 	rawsalt := make([]byte, saltSize)
@@ -65,10 +51,10 @@ func generateSalt() (salt string, err error) {
 	return salt, nil
 }
 
-// HashString hashes input string with SHA256 algorithm.
+// HashString hashes input string using SHA256.
 // If the presalt parameter is not provided HashString will generate new salt string.
 // Returns hash and salt string or an error if it fails.
-func HashString(str string, presalt string) (hash, salt string, err error) {
+func HashString(str, presalt string) (hash, salt string, err error) {
 	// chech if message is presalted
 	if presalt == "" {
 		salt, err = generateSalt()
@@ -101,7 +87,7 @@ func HashString(str string, presalt string) (hash, salt string, err error) {
 
 // CreateAPIToken returns JWT token with encoded username, role, expiration date and issuer claims.
 // It returns an error if it fails.
-func CreateAPIToken(username, role string, roleID uint32) (string, error) {
+func CreateAPIToken(username string, role Role) (string, error) {
 	var apiToken string
 	var err error
 
@@ -111,8 +97,8 @@ func CreateAPIToken(username, role string, roleID uint32) (string, error) {
 
 	claims := TokenClaims{
 		username,
-		role,
-		roleID,
+		role.Name,
+		role.ID,
 		jwt.StandardClaims{
 			ExpiresAt: (time.Now().Add(OneWeek)).Unix(),
 			Issuer:    appName,