Update Security to maintain list of subscriptions
Update Security to maintain list of subscriptions

andrewhart098/Lean,jameschch/Lean,AnObfuscator/Lean,young-zhang/Lean,Jay-Jay-D/LeanSTP,devalkeralia/Lean,JKarathiya/Lean,Mendelone/forex_trading,kaffeebrauer/Lean,Mendelone/forex_trading,AlexCatarino/Lean,AnshulYADAV007/Lean,Jay-Jay-D/LeanSTP,young-zhang/Lean,devalkeralia/Lean,Phoenix1271/Lean,andrewhart098/Lean,redmeros/Lean,andrewhart098/Lean,StefanoRaggi/Lean,QuantConnect/Lean,Mendelone/forex_trading,bizcad/Lean,devalkeralia/Lean,AnshulYADAV007/Lean,QuantConnect/Lean,tomhunter-gh/Lean,QuantConnect/Lean,redmeros/Lean,jameschch/Lean,JKarathiya/Lean,StefanoRaggi/Lean,Phoenix1271/Lean,Jay-Jay-D/LeanSTP,jameschch/Lean,young-zhang/Lean,StefanoRaggi/Lean,devalkeralia/Lean,bizcad/Lean,Phoenix1271/Lean,AnshulYADAV007/Lean,squideyes/Lean,AnObfuscator/Lean,Jay-Jay-D/LeanSTP,AlexCatarino/Lean,AnshulYADAV007/Lean,andrewhart098/Lean,squideyes/Lean,jameschch/Lean,bizcad/Lean,AlexCatarino/Lean,tomhunter-gh/Lean,redmeros/Lean,Jay-Jay-D/LeanSTP,JKarathiya/Lean,squideyes/Lean,AnshulYADAV007/Lean,jameschch/Lean,Phoenix1271/Lean,young-zhang/Lean,tomhunter-gh/Lean,AnObfuscator/Lean,kaffeebrauer/Lean,bizcad/Lean,StefanoRaggi/Lean,StefanoRaggi/Lean,tomhunter-gh/Lean,squideyes/Lean,AlexCatarino/Lean,AnObfuscator/Lean,Mendelone/forex_trading,kaffeebrauer/Lean,QuantConnect/Lean,JKarathiya/Lean,redmeros/Lean,kaffeebrauer/Lean,kaffeebrauer/Lean