Фильтр Dynami c в интерфейсе Kendo Angular 8

Question

как реализовать фильтр на стороне сервера в кендо-сетке. Я хочу отправить запрос в бэкэнд.

public state: State = {
    skip: 0,
    take: 5,
    // Initial filter descriptor
    filter: {
      logic: 'and',
      filters: [{ field: 'firstname', operator: 'contains', value: '' }]
    }
  };
  
  public gridData: GridDataResult = process(this.userList, this.state);
  public dataStateChange(state: DataStateChangeEvent): void {
    this.state = state;
    this.state.filter.filters.map(
      function (data, index) { 
        // @ts-ignore
        this.userData = { field: data.field, operator: data.operator, value: data.value };  
      }.bind(this)
    );
    console.log('this.userData', this.userData);
    this.gridData = process(this.userList, this.state);
    

<kendo-grid [data]="gridData" [skip]="state.skip" [sort]="state.sort" [filter]="state.filter" [sortable]="true" [filterable]="true" (dataStateChange)="dataStateChange($event)">
      <ng-container *ngFor="let column of columns">
        <kendo-grid-column [field]="column.field" [title]="column.title" [filterable]="true"> </kendo-grid-column>
      </ng-container>
    </kendo-grid>

Заранее спасибо