Get an access token

curl -X POST "https://api.nevia.cloud/v1/auth/token" \
  -H "Content-Type: application/json" \
  -d '{
    "assertion": "eyJhbGciOiJSUzI1NiIsImtpZCI6IjM5Mzg5MDg0NjM4NDA4NTQwNCIsInR5cCI6IkpXVCJ9.eyJpc3MiOiIzOTM4OTA4NDYyNDk4Njk5MDUiLCJzdWIiOiIzOTM4OTA4NDYyNDk4Njk5MDUiLCJhdWQiOiJodHRwczovL2F1dGguZXhhbXBsZS5jb20iLCJleHAiOjE3ODkwMDAwMDB9.c2lnbmF0dXJl"
  }'

{
  "access_token": "mKq2vT9xRz4LwB8pNcYd3Hs6JfU1eGa0",
  "token_type": "Bearer",
  "expires_in": 900
}