Former soap star Billy Magnussen first learned he was nominated for a Tony award in Broadway’s “Vanya and Sonia and Masha and Spike” from his mom. “My phone kept ringing, and I kept yelling at my phone, ‘Stop, mom! I’m trying to sleep,’” Magnussen told Page Six of the Tony announcement last week. “I don’t answer my phone that early, and it was my day off.” When he finally did pick up, “My mom was screaming. I didn’t understand what she was saying . . . She told me [the news], and I didn’t even register it. I was like, ‘This is awesome,’ then I went back to sleep.” Now opposite Sigourney Weaver and David Hyde Pierce, he previously starred on “As the World Turns.”