Change default state animator to another

Hi! I'm making a button with different animations that it looks in this way:


https://imgur.com/lbuxIMK

I would like to make that the button has a first default state (startButtonAnimation) and when it finishes its animation the default state changes to be another one (IdleButtonAnimation). The reason of this is because I want that the button makes a little animation at the beginning of it and stays static in its final key or point, and when I trigger other animation (like highlight or hover) it doesn't play that little animation once again, but only stays static. I don't know if it sounds logic, but I think making two animations, one first default state and another one that activates when the other finishes is what I want.

Is it possible to do that? Thanks!