+-----------+    +-------------+    +--------------+    +--------------------+    
| sigverify |--->| lock memory |--->| validate fee |--->| allocate accounts  |--->
+-----------+    +-------------+    +--------------+    +--------------------+    
                                
    +------------+    +---------+    +-=------------+   +--------------+
--->| load data  |--->| execute |--->| commit data  |-->|unlock memory |
    +------------+    +---------+    +--------------+   +--------------+