vnd.application/siren+xml

siren_1.xml

<entity class="order">
  <properties>
    <property name="orderNumber">42</property>
    <property name="itemCount">3</property>
    <property name="status">pending</property>
  </properties>
  <entities>
    <entity class="items collection"
            rel="http://x.io/rels/order-items"
            href="http://api.x.io/orders/42/items" />
    <entity class="info customer" rel="http://x.io/rels/customer">
      <properties>
        <property name="customerId">pj123</property>
        <property name="name">Peter Joseph</property>
      </properties>
      <links>
        <link rel="self" href="http://api.x.io/customers/pj123"/>
      </links>
    </entity>
  </entities>
  <actions>
    <action name="add-item"
            title="Add Item"
            method="POST"
            href="http://api.x.io/orders/42/items"
            type="application/x-www-form-urlencoded">
      <fields>
        <field name="orderNumber" type="hidden">42</field>
        <field name="productCode" type="text" />
        <field name="quantity" type="number" />
      </fields>
    </action>
  </actions>
  <links>
    <link rel="self" href="http://api.x.io/orders/42" />
    <link rel="previous" href="http://api.x.io/orders/41" />
    <link rel="next" href="http://api.x.io/orders/43" />
  </links>
</entity>

siren_2.xml

<entity class="order">
  <property name="orderNumber">42</property>
  <property name="itemCount">3</property>
  <property name="status">pending</property>
  <entity class="items collection"
          rel="http://x.io/rels/order-items"
          href="http://api.x.io/orders/42/items" />
  <entity class="info customer" rel="http://x.io/rels/customer">
    <property name="customerId">pj123</property>
    <property name="name">Peter Joseph</property>
    <link rel="self" href="http://api.x.io/customers/pj123"/>
  </entity>
  <action name="add-item"
          title="Add Item"
          method="POST"
          href="http://api.x.io/orders/42/items"
          type="application/x-www-form-urlencoded">
      <field name="orderNumber" type="hidden">42</field>
      <field name="productCode" type="text" />
      <field name="quantity" type="number" />
  </action>
  <link rel="self" href="http://api.x.io/orders/42" />
  <link rel="previous" href="http://api.x.io/orders/41" />
  <link rel="next" href="http://api.x.io/orders/43" />
</entity>