diff --git a/cic/data/token_template_v0.json b/cic/data/token_template_v0.json
index 06afef1..628001c 100644
--- a/cic/data/token_template_v0.json
+++ b/cic/data/token_template_v0.json
@@ -4,5 +4,10 @@
 	"precision": 0,
 	"code": null,
 	"supply": 0,
-	"extra": {}
+	"extra": [
+		{
+			"arg": "",
+			"arg_type": ""
+		}
+	]
 }
diff --git a/cic/token.py b/cic/token.py
index 104be8b..b9387b7 100644
--- a/cic/token.py
+++ b/cic/token.py
@@ -34,7 +34,8 @@ class Token(Data):
         self.supply = supply
         self.precision = precision
         self.code = code
-        self.extra_args = None
+        self.extra_args: list = []
+        self.extra_args_types: list = []
         self.path = path
         self.token_path = os.path.join(self.path, 'token.json')
 
@@ -53,8 +54,19 @@ class Token(Data):
         self.precision = o['precision']
         self.code = o['code']
         self.supply = o['supply']
-        self.extra_args = o['extra']
-
+        extras = []
+        extra_types = []
+        token_extras: list = o['extra']
+        if token_extras:
+            for token_extra in token_extras:
+                arg = token_extra.get('arg')
+                arg_type = token_extra.get('arg_type')
+                if arg:
+                    extras.append(arg)
+                if arg_type:
+                    extra_types.append(arg_type)
+        self.extra_args = extras
+        self.extra_args_types = extra_types
         self.inited = True