code: func (c *Client) CreateFeedWithManifest(request *feed.Request) (string, error) {
  	responseStream, err := c.updateFeed(request, true)
  	if err != nil {
  		return "", err
  	}
  	defer responseStream.Close()
  
  	body, err := ioutil.ReadAll(responseStream)
  	if err != nil {
  		return "", err
  	}
  
  	var manifestAddress string
  	if err = json.Unmarshal(body, &manifestAddress); err != nil {
  		return "", err
  	}
  	return manifestAddress, nil
  }
docs: // CreateFeedWithManifest creates a feed manifest, initializing it with the provided
  // data
  // Returns the resulting feed manifest address that you can use to include in an ENS Resolver (setContent)
  // or reference future updates (Client.UpdateFeed)