How to fetch Cloud Discovery Dashboard data in Microsoft Defender Portal using PowerShell?

Invoke-RestMethod -Uri "https://<tenant_id>.<tenant_region>.contoso.com/api/v1/alerts/" -Method Get -Headers @{Authorization="Token <your_token_key>"; "Content-Type"="application/json"} -Body (@{"filters"=@{"alertOpen"=True}} | ConvertTo-Json -Compress)

I run this with and get this error :

After that i try to run this script :

# Authorization token key
$AuthToken = ""

# API Endpoint
$ApiEndpoint = "https://xyzxsz.us.portal.cloudappsecurity.com/api/v1/alerts/"

# Construct headers with the access token
$headers = @{
    Authorization = "Token $AuthToken"
    "Content-Type" = "application/json"
}

# Request body with the filter
$body = @{
    alertOpen = $true
}

# Make request to the API
$response = Invoke-RestMethod -Uri $ApiEndpoint -Method Get -Headers $headers -Body ($body | ConvertTo-Json -Depth 10)
$response

and get this output : It give the same output whenever i try to filter it with alertOpen = true or false

data          : 
                URL=https://security.microsoft.com/alerts/ca659304fea2e98e27c04bac82}...}
hasNext       : False
max           : 100
total         : 56
moreThanTotal : False