Case: User tries to delete other user's entry.
Expected Result: Not Found.
Case: User tries to delete entry that doesn't exist.
Expected Result: Not Found.
Case: User tries to delete user's existing entry.
Expected Result: Success.
Note: Check if entry exists after the delete operation (should be Not Found).
Case: User tries to delete other user's entry. Expected Result: Not Found.
Case: User tries to delete entry that doesn't exist. Expected Result: Not Found.
Case: User tries to delete user's existing entry. Expected Result: Success. Note: Check if entry exists after the delete operation (should be Not Found).