Why don't I get json data in Angular

I have a class in a webapi

public class Respuesta
{
    public int Exito { get; set; }
    public string Mensaje { get; set; }
    public object Data { get; set; }
}

and have the following method in ASP.NetCore:

public IActionResult Get()
{ ..
using (NegociosAPIContext db = new NegociosAPIContext())
                {
                    var lst = db.Cliente.ToList();
                    oRespuesta.Exito = 1;
                    oRespuesta.Data = lst;
                    return Ok(oRespuesta);
                }

In the otherside (appAngular), I did the import in module.ts import {HttpClientModule } from '@angular/common/http'; and it´s my code service:

Image

and on my controller

import { Component, OnInit } from '@angular/core';
import {ApiclienteService} from '../service/apicliente.service';

@Component({
  selector: 'app-cliente',
...
})
export class ClienteComponent implements OnInit {

  constructor(private apiCliente: ApiclienteService) {
    apiCliente.getClientes().subscribe(response => {
      console.log('respuesta:'+response);

    })
   }
…
}

If I make a call to the api in the browser, I get this

{
    "exito":1, 
    "mensaje":" ",
    "data":[
        {
            "id":1, 
            "nombre":"Liliana  Torres"
        },
        {
            "id":2,
            "nombre":"Redmon Redinton"
        }
    ]
}

Then in Angular app, I get only the {object Object}. When I try to put console.log('respuesta:'+response.json); this throws undefined

An important that i forget was mi class in typescript; i have:

import { Icliente } from './ICliente';

export interface Response {
    exito:number;
    mensaje:string;
    data:Icliente[];
}