title: Where I can get payer_id for executing payment (paypal)?
body: <p>Working with PayPal Python REST SDK. After payment created we need to execute this payment. At <a href="https://github.com/paypal/PayPal-Python-SDK/blob/master/samples/payment/execute.py" rel="nofollow noreferrer">https://github.com/paypal/PayPal-Python-SDK/blob/master/samples/payment/execute.py</a> is code sample. But when executing payment </p>
  
  <pre><code>if payment.execute({"payer_id": "DUFRQ8GWYMJXC"}):  # return True or False
      print("Payment[%s] execute successfully" % (payment.id))
  else:
  print(payment.error)
  </code></pre>
  
  <p>we need to write payer_id. But how I can take it? Any ideas or code examples?</p>