Convert JavaScript Object to string

I’m working on a project in Angular 8 in which I post values from a textArea and get an Object as the following from an API : API response , I’m trying to access “raisonSociale” but I can’t find a way to do it

Here’s my http.post :

postResponse: any;

postRefs(){
return this.httpClient.post(this.url,this.datas)
  .subscribe(
    data => {
      console.log(data)
      const parsed = JSON.stringify(data)
      return this.postResponse = parsed;
    },
  );
 }

So, I store the response from POST in postReponse and try to render in my html file

         <tr>
          <td *ngIf="postResponse">{{postResponse.crossPart.all}}</td>
          <td *ngIf="postResponse">{{postResponse}}</td>
          <td *ngIf="postResponse">{{postResponse}}</td>
          <td *ngIf="postResponse">{{postResponse}}</td>
        </tr>

But in my HTML it render as the following : HTML result

What I’ve tried :

I tried to without using const parsed :

postRefs(){
return this.httpClient.post(this.url,this.datas)
  .subscribe(
    data => {
      console.log(data)
      JSON.stringify(data)
      return this.postResponse = data;
    },
  );
}

The above returns me [Object Object] : Object result

Thank’s for your time and your help in advance.

EDIT :

Thank you all for the answers!

@DmytroHuz solution made it work like a charm, here’s what needed to be done :

        <tr *ngFor="let item of postResponse.crossPart.found">
          <td *ngIf="postResponse">{{item.articleSociete}}</td>
          <td *ngIf="postResponse">{{item.raisonSociale}}</td>
          <td *ngIf="postResponse">{{postResponse}}</td>
          <td *ngIf="postResponse">{{postResponse}}</td>
        </tr>

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Source Url Convert JavaScript Object to string