Запрос:

curl -X 'POST' \
'https://apicsp.csat.ru/api/v1/token' \
-H 'accept: */*' \
-H 'Content-Type: multipart/form-data' \
-F 'username=demo' \
-F 'password=demo' \
-F 'grant_type=password'

Ответ:

{
"access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJodHRwczpcL1wvYXBpY3NwLmNzYXQucnUiLCJhdWQiOiJodHRwczpcL1wvY3NwLmNzYXQucnUiLCJqdGkiOiIxMjUiLCJpYXQiOjE3MjAxNzMzODMsIm5iZiI6MTcyMDE3MzM4MywiZXhwIjoxNzIwMTc2OTgzLCJhdXRoX2tleSI6IkZWRFhNMUhYR1VNNlNGZVBFdFR0UWQwemhsUXJ4LS15In0.PITA_wlTnea9AhBx_iycVRiqayrmRM94W4O3RZCUz1EDlp-DbgPUy5AsVuxIf8EdfSmDQIfU8g6mq6cJv8sy0XDKwf4Jijkn6OawP8pbvYyhDkdeddOZNMeAXqFOvOD5FRKun-TyGrM5R9EyUGYHndtT8SaKvRzFbjfGhYSLBA4cwpPSkcB9M-g-vwdKf5g_sKYSJ0QBGNRzEck13SBt7FWsS5HMakm2fxJBnbcbV-tXzKv1luWWU_sQUj4lVOHQTETaujjebs87WkLKan7QbZ26GkeZ1ihyLPfLztsJUlRByeAFuYpGV7b4xK5BlhMDm6Dx_-VRqN1yuaup-1TAGQFzHqA9Y3OsL4hU8F3sjnRraDZNISGAmfuKvKYp7ocmnVGxF1TFUsXg65yrWhbS015KCVNgpRUxe3U822o",
"token_type": "bearer",
"expires_in": 3600
}

access_token - Токен авторизации;

token_type - Тип токена;

expires_in - Время жизни;