Get access_token by Server-to-Server OAuth

“I am getting an error when trying to request an access_token by making a request to the address https://zoom.us/oauth/token?grant_type=account_credentials&account_id={accountId}. The error message is {
“reason”: “unsupported grant type”,
“error”: “unsupported_grant_type”
}”.
And my accountID is get from JWT decode ‘eyJzdiI6IjAwMDAwMSIsImFsZyI6IkhTNTEyIiwidiI6IjIuMCIsImtpZCI6IjY3YWNjNmQyLWMwMTctNGMzNy1iNGI4LWZmMWRkZjRkYTk4ZCJ9.eyJ2ZXIiOjksImF1aWQiOiJhYjRkYzU0YmZjODk1ZmY2NmNjNWY0OTk5NGRhODFkNSIsImNvZGUiOiJaTmwyNmJHcWI5aW5vWHgyT1BSUmYtZ3A2WlpxS2FwckEiLCJpc3MiOiJ6bTpjaWQ6ZzMyV1FPZGhSZG0xU3J6SVZfMks2ZyIsImdubyI6MCwidHlwZSI6MCwidGlkIjozLCJhdWQiOiJodHRwczovL29hdXRoLnpvb20udXMiLCJ1aWQiOiJlMGp2MDJfTVRpU2lIZVBkcEZibm5nIiwibmJmIjoxNjg0NDYyNTAzLCJleHAiOjE2ODQ0NjYxMDMsImlhdCI6MTY4NDQ2MjUwMywiYWlkIjoiY3ZNZ0hBMVRUQnVvODBVZUxoZDRVZyJ9.k4BTbnnzeaMvItQ-OFpzExXPepw_XnLNX-VyCMorIcYzQhXLkHGxRm4NgESCRMyHegTaco7D1F5hWbWO6r-hnw’
I got the filed aid = cvMgHA1TTBuo80UeLhd4Ug as my accountid