How to add required Open Graph meta tags to support Pinterest Rich Pins

By default nopCommerce is missing two required Open Graph meta tags to support Product Pins (Rich Pins) - og:product:price:amount and og:product:price:currency. To add these open /Views/Product/ProductTemplate.Simple.cshtml and /Views/Product/ProductTemplate.Grouped.cshtml and add the following two lines of code under the last Open Graph meta tag.

Html.AddHeadCustomParts("<meta property=\"og:product:price:amount\" content=\"" + Html.Encode(Model.ProductPrice.PriceValue) + "\" />");
Html.AddHeadCustomParts("<meta property=\"og:product:price:currency\" content=\"" + Html.Encode(Model.ProductPrice.CurrencyCode) + "\" />");

Hi, i need your help.
To automatically add articles from your website to the Facebook catalog, you must include the microdata tags in the Facebook pixel installation.
https://www.facebook.com/business/help/120325381656392?id=725943027795860
This is the specification for meta Tags.
The product must have
<meta property="og:title" content="Facebook T-Shirt">
<meta property="og:description" content="Unisex Facebook T-shirt, Small">
<meta property="og:url" content="https://example.org/facebook">
<meta property="og:image" content="https://example.org/facebook.jpg">
<meta property="product:brand" content="Facebook">
<meta property="product:availability" content="in stock">
<meta property="product:condition" content="new">
<meta property="product:price:amount" content="7.99">
<meta property="product:price:currency" content="USD">
<meta property="product:retailer_item_id" content="facebook_tshirt_001">
<meta property="product:item_group_id" content="fb_tshirts">
And a meta ID.
Thanks if you can show me how to add the meta.