curl --request POST \
  --url https://api.staging.cartaosimples.com.br/integration/v1/authentication/accesstoken \
  --header 'Content-Type: application/json' \
  --data '
{
  "clientId": "<string>",
  "clientSecret": "<string>"
}
'

{
  "token_de_acesso": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...",
  "expira_em_segundos": 3600,
  "expira_em": "2025-01-15T11:30:00-03:00",
  "tipo_de_token": "Bearer",
  "escopo": "credicarro.integration.access/full"
}