Update signature

src/helpers.cr

@@ -298,13 +298,12 @@ end
 def decrypt_signature(a)
   a = a.split("")
 
-  a = splice(a, 21)
-  a.delete_at(0..2)
-  a = splice(a, 41)
+  a = splice(a, 62)
+  a.delete_at(0..0)
+  a.reverse!
+  a.delete_at(0..2)
+  a = splice(a, 16)
   a.reverse!
-  a.delete_at(0..0)
-  a = splice(a, 21)
-  a.delete_at(0..0)
 
   return a.join("")
 end