[fcm] postman으로 fcm 푸시알림 전송
[post] https://fcm.googleapis.com/fcm/send [Headers] Authorization : key={{SERVER_KEY}} Content-Type : application/json [Body] - raw - JSON { "to" : "{{DEVICE_TOKEN}}", "registration_ids" : [ "{{DEVICE_TOKEN1}}", "{{DEVICE_TOKEN2}}", ], "notification" : { "body" : "Body of Your Notification", "title": "Title of Your Notification", "sound": "default" }, "data" : { "body" : "Body of Your Notificat..