The news was first revealed on 24 Oras last Monday night, October 12.
"S'yempre po kabado and excited dahil alam ko na malaki yung ini-expect nila sa akin bilang iyong First Yaya," the actress told the Kapuso news show.
"First ko na mabigyan ng primetime na ako po yung title role. Kaya naman maraming marami salamat po ng sobra sobra sa GMA." she added.
Sanya, who will give life to the role of Yaya Melody, will star alongside Gabby Concepcion on the show.
It could be recalled that the Kapuso star rose to fame when she portrayed Sang'gre Danaya in the 2016 version of Encantadia.
She has since appeared in more Kapuso series, including starring roles in Haplos and Dahil Sa Pag-Ibig and supporting roles in Cain at Abel and Beautiful Justice.
It was last September when Marian Rivera, who was originally tapped for the role, announced that she was backing out from the show as she cannot be away from her children for a long time per the lock-in taping rule.
The show was supposed to serve as Marian's television comeback since 2018, after an appearance in Daig Kayo Ng Lola Ko.
First Yaya was a part of the line-up of new shows from the GMA network as part of their 70th anniversary.