shop.rb

def self.send_order(order, shopify_signature)
    shop = Shop.first
    headers = {
      "X-Shopify-Topic"       => "orders/paid",
      "X-Shopify-Hmac-Sha256" => shopify_signature,
      "X-Shopify-Shop-Domain" => shop.shopify_domain,
      "X-Shopify-Order-Id"    => order.id,
      "X-Request-Id"          => 'some-value',
      'Content-Type'          => 'application/json',
      'Accept'                => 'application/json'
    }
    url     = 'https://fastserver-jaxrs-dev.fastmodelsports.com/shopify/order/payment'
    results = HTTParty.post(url, headers: headers, body: order)
  end