REST token request (OAuth 2.0)

sfmc-rest-token-request-oauth2.txt

POST /v2/token HTTP/1.1
Host: YOURENDPOINT.auth.marketingcloudapis.com
Content-Type: application/json
cache-control: no-cache
{
    "grant_type": "client_credentials",
    "client_id": "YOURCLIENTID",
    "client_secret": "YOURCLIENTSECRET",
    "scope": "email_read email_write email_send data_extensions_read data_extensions_write",
    "account_id": "YOURMID"
}