I am using `sales_order_status_history_save_after` event for store data in my custom table.

I need also update comment with a prefix of `commentId (entity_id)` in to `sales_order_status_history` table.

While I am doing setComment data in observer than two times data stored in my custom table. 

also, I have added log in to the observer file I found that my event call two times. I did not understand why its call two times and my data stored 2 times in my custom table.

is anyone knows how we can solve this issue??