let { ConversationType } = JIM;

let convesation = {
  conversationType: ConversationType.GROUP,
  conversationId: 'group02',
};
// Subscribe to messages. If disconnected, call unsubscribeMessage explicitly to unsubscribe
jim.subscribeMessage(convesation).then(() => {
  console.log('subscribeMsg successfully.')
}, (error) => {
  console.log(error)
});


// unsubscribe
jim.unsubscribeMessage(convesation).then(() => {
  console.log('unsubscribeMsg successfully.')
}, (error) => {
  console.log(error)
});