JOYN

{
  "pkg":"de.prosiebensat1digital.seventv",
  "className":"",
  "data":{
    "uri":"https://www.joyn.de/play/serien/young-sheldon/5-8-der-grosskanzler-und-der-suendenpfuhl"
  },
  "flag":268435456,
  "action":"android.intent.action.VIEW",
  "extra":[]
}

2022/3/10 added

uri = "https://www.joyn.de/play/serien/young-sheldon/5-8-der-grosskanzler-und-der-suendenpfuhl"  (Official JOYN details page address)

adb:
adb shell am start -W -a android.intent.action.VIEW -d "https://www.joyn.de/play/serien/young-sheldon/5-8-der-grosskanzler-und-der-suendenpfuhl" de.prosiebensat1digital.seventv   (Need to add uri)