curl --location --request POST 'https://app.asana.com/api/1.0/portfolios//addCustomFieldSetting' \
--header 'Content-Type: application/json' \
--data-raw '{
    "data": {
        "custom_field": "14916",
        "insert_after": "1331",
        "insert_before": "1331",
        "is_important": true
    }
}'{
    "data": {}
}