How can i set variables in adobe launch using postman API json?

[EsakkideviDi]

{

    "data": {

        "attributes": {

            "delegate_descriptor_id": "adobe-analytics::actions::set-variables",

            "name": "set-variables",

            "settings": "{\"eVar1\": \"%dataelement%\"}"

        },

        "relationships": {

            "extension": {

                "data": {

                    "id": "{{extension}}",

                    "type": "extensions"

                }

            },

            "rules": {

                "data": [

                    {

                        "id": "{{rule}}",

                        "type": "rules"

                    }

                ]

            }

        },

        "type": "rule_components"

    }

}

I am trying to set variables by calling a data element in Adobe Launch using the Postman API, but I am encountering a 'schema-validation-error'. Could anyone please help me resolve this issue? Additionally, if there are any relevant documentation links, please share.