WeChat.ServerMessage.EventHandler.decode_json_msg

You're seeing just the function decode_json_msg, go back to WeChat.ServerMessage.EventHandler module for more information.
Link to this function

decode_json_msg(encrypt_content, params, client)

Specs

decode_json_msg(encrypt_content(), params(), WeChat.client()) ::
  {:ok, :encrypted, json_string()} | {:error, String.t()}