import requests
from uuid import uuid4
import json

headers = {"X-GatewaySession":"[REDACTED]", "X-ClientVersion":'dev'}
data = {
	"jsonrpc": '2.0',
	"method": "Companion.initApp",
	"params": {"locale": "en_US", "fallbackLocale": "en-GB"},
	"id": str(uuid4())
}
x = requests.post("https://companion.battlefield.com/jsonrpc/web/api?Companion.initApp", headers=headers, data=json.dumps(data))
from pprint import pprint
pprint(x.json())