{Attribute[{Name:generic.maxHealth,Base:1}]} Error

Attribute generic.maxHealth Base:1

What I expected to happen was...:
The Iron golem should die in one hit, because the generic.maxHealth attribute was set to 1 or a Half-Heart

What actually happened was...:
When I hit the golem the damage indicator showed 49 hearts (I assume, I couldn't see exactly) and it put the golem at the damage I wanted it to summon at initially.

From what I assume the golem was put at the 50 hearts it normally has and once I updated it it set it to the one the attribute had set.

It may be worth mentioning it was an execute command that summoned it.

Steps to Reproduce:
/summon VillagerGolem ~ ~ ~ {Attribute[

{Name:generic.maxHealth,Base:1}

]}