title: Card not saving for later use in Stripe React Native
body: <p>In my application i'm tokenizing the card details with CardField values. Here's how my UI component looks like:</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>&lt;CardField
      postalCodeEnabled={false}
      placeholder={{
          number: '4242 4242 4242 4242',
      }}
      cardStyle={{
          backgroundColor: '#FFFFFF',
          textColor: '#000000',
      }}
      style={{
          width: '100%',
          height: 50,
          marginVertical: 30,
      }}
      onCardChange={(cardDetails) =&gt; {
          setCard(cardDetails);
      }}
  /&gt;
  &lt;TouchableOpacity style={styles.continue} onPress={addCardDetails}&gt;
    &lt;Text&gt;
      Pay
    &lt;/Text&gt;
  &lt;/TouchableOpacity&gt;
      </code></pre>
  </div>
  </div>
  </p>
  <p>Now i am tokenizing the card info and trying to add the card for later use. Here's what i've done.</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>    const addCardDetails = async () =&gt; {
  
          const token = await createToken({
              type: 'Card',
              currency: 'usd',
              address: {
                  country: 'US',
              },
              name: 'cardName',
          })
          const card = {"card": {
              "source": {
                "source": token.token.id
              }
            }
          }
          await fetch('${API}/payment/', {
              method: 'POST',
              headers: {
                  Accept: 'application/json',
                  'Content-Type': 'application/json',
                  'x-access-token': accessToken,
              },
              body: JSON.stringify({
                  card
              }),
          }).then(res =&gt; {
              res.json().then(response =&gt; {
                  console.info(response, 'response');
              });
          });
          
      }</code></pre>
  </div>
  </div>
  </p>
  <p>Now, the createToken is giving me ID but when i use that ID to store card for later use, it doesn't add to the card array. What do i need to do to add card for later use.</p>