Dynamic REST API call angular

I have been successful in accessing static API data on the page. I am now trying to access dynami API. I have read some documentation to access the dynamic API, but the documentation by API provider is different from online resources. I am not sure what changes I have to make in existing code to access dynamic API data. Here is the link from API provider - https://drive.google.com/file/d/0B2HH3TWuI4Fdc3RfNGVocy1pT0tuSXlLdHlPMUZSRG5GTWJV/view. I am also confused about the contracts and getter, setter mentioned in the documentation. How and where should I use them?

Here is my code for accessing Name, Line and MoneyLine data from static json API - https://sportsbook.draftkings.com/api/odds/v1/leagues/3/offers/gamelines.json

How can I make use of the documentation and access live API data?

api.component.ts code

import {Component} from '@angular/core';
import {HttpClient} from '@angular/common/http'
import {forkJoin} from 'rxjs';
import {map} from 'rxjs/operators';

@Component({
  selector: 'app-mlb-api',
  templateUrl: './mlb-api.component.html',
  styleUrls: ['./mlb-api.component.css']
})
export class MlbApiComponent  {
//allhomeTeamName;
//allawayTeamName;
allline;
allOdds;
allName;
all: Array<{line: string, name: string,oddsAmerican:string}> = [];
firstLinePerGame: Array<string>;
oddsAmericans: Array<string>;

  constructor(private http: HttpClient) {}

  ngOnInit() {

    const character = this.http.get('https://sportsbook.draftkings.com/api/odds/v1/leagues/3/offers/gamelines.json').pipe(map((re: any) => re.events));
    const characterHomeworld = this.http.get('https://www.fantasylabs.com/api/sportevents/3/2019_06_17');

    this.firstLinePerGame = new Array<string>();
    //this.oddsAmericans = new Array<string>();

    forkJoin([character, characterHomeworld]).subscribe(([draftkingsResp, fantasylabsResp]) => {      

      //this.allhomeTeamName = draftkingsResp.map(r => r.homeTeamName);
      //this.allawayTeamName = draftkingsResp.map(r => r.awayTeamName);
      this.allName = draftkingsResp.map(r => r.name);
      this.allline = draftkingsResp.map(r=>r.offers).flat().map(r => r.outcomes).flat().map(o => o.line);
      this.allline = this.allline.filter(l => !!l);
      this.allOdds = draftkingsResp.map(r => r.offers).flat().map(r=>r.outcomes[0]).flat().map(o=>o.oddsAmerican);
      this.createAllArray();      


    });
  }

  createAllArray(): void {
    for (let i = 0; i < this.allline.length; i++) {
      let item = {
        line: this.allline[i],
        //awayTeam: this.allawayTeamName[i],
        //homeTeam: this.allhomeTeamName[i],
        name:this.allName[i],
        oddsAmerican: this.allOdds[i]
      }
      this.all.push(item);
    }
  }
}

api.component.html code

<table class="table table-striped table-condensed table-hover">
  <thead>
      <tr>

        <!--   <th class="awayTeamName">awayTeamName&nbsp;<a ng-click="sort_by('awayTeamName')"><i class="icon-sort"></i></a></th>
          <th class="field3">homeTeam&nbsp;<a ng-click="sort_by('HomeTeam')"><i class="icon-sort"></i></a></th>
 -->           <th class="field3">Name&nbsp;<a ng-click="sort_by('Name')"><i class="icon-sort"></i></a></th>
            <th class="line">Line&nbsp;<a ng-click="sort_by('line')"><i class="icon-sort"></i></a></th>
             <th class="field3">Money Line&nbsp;<a ng-click="sort_by('oddsAmericans')"><i class="icon-sort"></i></a></th>
      </tr>
  </thead>

  <tbody>
    <ng-container *ngFor="let item of all| paginate: { itemsPerPage: 5, currentPage: p }; let i = index">
      <tr>
        <td></td>
<!--         <td></td>
        <td> </td> -->
                <td></td>

        <td></td>

      </tr>
    </ng-container>
  </tbody>
</table> 


<pagination-controls (pageChange)="p = $event"></pagination-controls>

from Dynamic REST API call angular