package.json

"cordova": { 
  "plugins": { 
    ...
    "ionic-plugin-deeplinks": { 
      "URL_SCHEME": "awsomeauth", 
      "DEEPLINK_SCHEME": "https", 
      "DEEPLINK_HOST": "awsomeauth.co.uk", 
      "ANDROID_PATH_PREFIX": "/"
    } 
    ...
  }, 
  "platforms": [ 
    "android" 
  ] 
}