Это же base64
На глаз же видно
{"options":{"id":"3","nasid":"6","usernametype":"qinq","service":"coa","onlyactive":"0","port":"3799"},"attributes":{"6":{"id":"6","nasid":"6","scenario":"reply","modifier":"active","attribute":"PPPD-Upstream-Speed-Limit","operator":"+=","content":"{SPEEDUP}"},"7":{"id":"7","nasid":"6","scenario":"reply","modifier":"all","attribute":"Framed-IP-Address","operator":"=","content":"{IP}"},"8":{"id":"8","nasid":"6","scenario":"reply","modifier":"active","attribute":"Acct-Interim-Interval","operator":"=","content":"600"},"9":{"id":"9","nasid":"6","scenario":"check","modifier":"all","attribute":"Cleartext-Password","operator":":=","content":"_Radius secret_"},"10":{"id":"10","nasid":"6","scenario":"reply","modifier":"inactive","attribute":"ictive","attribute":"PPPD-Downstream-Speed-Limit","operator":"+=","content":"{SPEEDDOWN} "}},"services":{"6":{"id":"2","nasid":"6","pod":"{PRINTF} \"User-Name={USERNAME},Called-Station-Id=eth1.{USERNAME}\" | {SUDO} {RADCLIENT} {NASIP}:{NASPORT} disconnect {NASSECRET}","coaconnect":"{PRINTF} \"User-Name={USERNAME},Framed-IP-Address={IP},PPPD-Upstream-Speed-Limit={SPEEDUP},PPPD-Downstream-Speed-Limit={SPEEDDOWN},L4-Redirect=0\" | {SUDO} {RADCLIENT} {NASIP}:{NASPORT} coa {NASSECRET}","coadisconnect":"{PRINTF} \"User-Name={USERNAME},Called-Station-Id=eth1.{USERNAME},L4-Redirect=disabled\" | {SUDO} {RADCLIENT} {NASIP}:{NASPORT} disconnect {NASSECRET}"}}}