Decode a string in html / javascript (have tried base64 decoder but did not work)

Question

I'm analyzing a web, but I met a situation like this. I have tried to use base64 decoder to decode it but it did not work. What kind of encode method it used here?

<input type="hidden" id="ttt" value="aHR0LWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=cHM6LLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=y96ZWFsb3VLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=zLWJyYWhtYWLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=d1cHRLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=hLjg1LTLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=E3LTILWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=wMi0LWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=xMDEucGLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=xlc2suLWtqZ3Vra3Vma3lkZktHTEtVRktIS0tndWZraGtobGtqZ2t1Z2tqdWd1eWZvdWd1Z3lpeWZrZmtmazg3NjQ1Nzd0OHlnaWo0amVyZnlnaXlrZGVydDQzNmU0N3l0aXVrdS0=cGFnZQ==" />