String out = "[\"\",{\"text\":\"click that -> \",\"color\":\"blue\"},{\"text\":\"click me\",\"color\":\"green\",\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/me hi\"},\"hoverEvent\":{\"action\":\"show_text\",\"value\",\"hi\"}},{\"text\":\" <-\",\"color\":\"blue\"}]";

IChatComponent chat_out = IChatComponent.Serializer.jsonToComponent(out);
Minecraft.getMinecraft().thePlayer.addChatMessage(chat_out);