public CCommentPacket(String fee_adr, String adr, String parent_type, long parentID, String mes)
      throws Exception {
    // Super class
    super("ID_TWEET_COMMENT_PACKET");

    // Builds the payload class
    CCommentPayload dec_payload = new CCommentPayload(adr, parent_type, parentID, mes);

    // Build the payload
    this.payload = UTILS.SERIAL.serialize(dec_payload);

    // Network fee
    fee = new CFeePayload(fee_adr, 0.0001);

    // Sign packet
    this.sign();
  }