curl -X POST --header "Authorization: key=AAAAA-Jl8-E:APA91bHawDTKYUD0pKOGF10ZzSf3Szb-DtJ0wREWzrjgmiseM7vBv8-TkASCSLhvMKQbKe4Jo2L05QthTIxxbqaSGrJGrY2tFHcbdgx_nM3iUKLcWR230BCg0b7Fe-fNVDyv0lnkvJBK" \
    --Header "Content-Type: application/json" \
    https://fcm.googleapis.com/fcm/send \
    -d "{\"to\":\"dMNKRtUhI5E:APA91bHYc8iQyhx_F-q1E7pne7WkK1l2es6PHwgKNEo__NizKMM0c4H_EkY7Z3RGUQHUbDrQ6b1OUcftdhH0cJswvaf-wPoXqoccbHfoC6dFHck8UsiOW_GBh_ks4AVlUNbe6Ux8GOzM\",\"notification\":{\"message\":\"'source:sip:+13158981139@switch.inextrix.com,destination:sip:508100@flexisip.astppbilling.org:5060;fs-conn-id=28ed1658dbfe81f2;CtRtb6154178c55f93e8=tcp:switch.inextrix.com'\",\"title\":\"'source:sip:+13158981139@switch.inextrix.com,destination:sip:508100@flexisip.astppbilling.org:5060;fs-conn-id=28ed1658dbfe81f2;CtRtb6154178c55f93e8=tcp:switch.inextrix.com'\"}}"