curl --request PUT \
  --url https://api.portkey.ai/v1/mcp-servers/{mcpServerId}/user-access \
  --header 'Content-Type: application/json' \
  --header 'x-portkey-api-key: <api-key>' \
  --data '
{
  "user_access": [
    {
      "user_id": "<string>",
      "enabled": true
    }
  ],
  "default_user_access": "allow"
}
'

{
  "success": true
}