You can customize user content according to the criteria you specify in the JOIN studio. On the mobile side, to take into account audience-specific content, you can add a key/value object when sending the request.

Trigger mode

trigger.init = JOINStoriesInit(
  "<your_join_alias>", 
  customParameters = mapOf(
    "key1" to "value1", 
    "key2" to "value2", 
    "key3" to "value3,value4"
  )
)

Standalone mode

JOINStories.startPlayer(
        context,
        "<your_join_alias>", 
        customParameters = mapOf(
          "key1" to "value1", 
          "key2" to "value2", 
          "key3" to "value3,value4"
        )
)