curl --request PUT \
  --url https://api.eden.art/v2/sessions/{session_id}/permissions \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '{
  "permissions": [
    {
      "username": "<string>",
      "level": "editor"
    }
  ]
}'

{
  "success": true
}