Make a POST to:
curl -X POST
https://fcm.googleapis.com/fcm/send
-H 'Authorization: key=key'
-H 'Content-Type: application/json'
-H 'cache-control: no-cache'
-d '{
"notification": {
"title": "Sopa de macaco xddddd",
"body": "Jimbo eres asombroso",
"click_action": "http://localhost:3000/",
"icon": "https://cdn6.aptoide.com/imgs/1/5/a/15a712db7f4bfa20025186ae2fa8a0c3_icon.png?w=240"
},
"to": "userToken"
}'