Viu(version:2.2.1)

{
  "pkg":"com.viu.tv",
  "className":"",
  "data":{
    "uri":"viu://androidtv/ott/sg/en-us/vod/30123/Love-in-the-Moonlight"
  },
  "flag":268435456,
  "action":"android.intent.action.VIEW",
  "extra":[]
}

  //ATTENTION!! URI 
  /* 
  * movies, seasons followed by the video name.
  */
    
SEASON - https://www.viu.com/ott/sg/en-us/vod/30123/Love-in-the-Moonlight
MOVIE - https://www.viu.com/ott/sg/en-us/vod/251692/Parasite-Uncut

//adb test command
//SEASON

adb shell am start -W -a android.intent.action.VIEW -d "viu://androidtv/ott/sg/en-us/vod/30123/Love-in-the-Moonlight" com.viu.tv