The japanese word and chinese words receive from tuna seems a mess

[XketsuroX]

I'm simply trying to know why Mojibake happens for Japanese words and Chinese words, here are the json I received from plugin which the title of the song should be 逆夢. I'm wondering if there's problem with the decoding scheme?

{
  data: {
    status: 'playing',
    title: '閫嗗あ',
    artists: [ 'King Gnu' ],
    progress: 0,
    duration: 308000,
    cover_url: 'https://lh3.googleusercontent.com/JXBhGHLdtcnnywU7nHbVhz9UZeWTHgkZ8FbkZd3osfg2SUWAHRTm8rEJlNBQVQuG33Gf9kgBqoSPwMsljw=w544-h544-l90-rj',
    cover: 'https://lh3.googleusercontent.com/JXBhGHLdtcnnywU7nHbVhz9UZeWTHgkZ8FbkZd3osfg2SUWAHRTm8rEJlNBQVQuG33Gf9kgBqoSPwMsljw=w544-h544-l90-rj'
  }
}