curl --location --request POST 'https://api2.hik-cloud.com/oauth/token' \
--header 'Authorization: Bearer ' \
--data-urlencode 'client_id=a4f********b324' \
--data-urlencode 'client_secret=0b********df59e68' \
--data-urlencode 'grant_type=client_credentials'
{
"access_token": "62c54b72-c85f-4a4e-8fd0-6941744d0af7",
"token_type": "bearer",
"expires_in": 43199,
"scope": "app"
}