I get "401 Unauthorized error" when try to get player item data with "stateless token"

Unity Services
,
1

Hi folks.

I’m using Services Web API for dedicated server and I want to connect to services (in this example I try to get data from cloud-save) with “STATELESS_ACCESS_TOKEN”, but I got this error:

HTTP/1.1 401 Unauthorized error:{"status":401,"title":"Unauthorized", "detail":"Invalid Authorization header","code":51,"type":"https://services.docs.unity.com/docs/errors#51"}

public static async Task<CloudSaveReceivedPlayerData> GetPlayerInfo()
{
    string url = $"https://services.api.unity.com/cloud-save/v1/data/projects/{_projectId}/environments/{_environmentId}/players/{_playerId}/items?keys=playerInfo";
    using UnityWebRequest request = new(url, UnityWebRequest.kHttpVerbGET);
    
    try
    {
        string token = $"Bearer {_adminAccessToken}";
        request.SetRequestHeader("Content-Type", "application/json");
        request.SetRequestHeader("Authorization", token);
        request.downloadHandler = new DownloadHandlerBuffer();
       
        await request.SendWebRequest();
        
        if (request.result != UnityWebRequest.Result.Success)
            return null;

        CloudSaveReceivedData receivedData = JsonUtility.FromJson<CloudSaveReceivedData>(request.downloadHandler.text);
        if(receivedData == null)
            return null;
        
        CloudSaveReceivedPlayerData playerData = receivedData.results[0];
        return playerData;
    }
    catch (Exception ex)
    {
        return null;
    }
}

Actually, I can take the data with base64 (SERVICE_ACCOUNT_CREDENTIALS) string, but I want to know what is problem in this code?

This works correctly.

curl -H "Authorization: Basic < SERVICE_ACCOUNT_CREDENTIALS >" \
https://services.api.unity.com/<ENDPOINT>

Thanks.