186ea35b5439d9cadb13a07a2f491c99 <form method="post" action="https://sandbox.gateway.payulatam.com/ppp-web-gateway/">
  <input name="merchantId"    type="hidden"  value="508029">
  <input name="accountId"     type="hidden"  value="512322">
  <input name="description"   type="hidden"  value="Test PAYU"  >
  <input name="referenceCode" type="hidden"  value="abs098" >
  <input name="amount"        type="hidden"  value="500">
  <input name="tax"           type="hidden"  value="0">
  <input name="taxReturnBase" type="hidden"  value="0">
  <input name="currency"      type="hidden"  value="MXN" >
  <input name="signature"     type="hidden"  value="186ea35b5439d9cadb13a07a2f491c99"  >
  <input name="test"          type="hidden"  value="1" >
  <input name="buyerEmail"    type="hidden"  value="test@test.com" >
  <input name="buyerFullName"    type="hidden"  value="Martin" >
  <input name="shippingAddress" type="hidden"  value="test@test.com" >
  <input name="shippingCity" type="hidden"  value="test@test.com" >
  <input name="shippingCountry" type="hidden"  value="test@test.com" >
  <input name="telephone" type="hidden"  value="test@test.com" >
  <input name="responseUrl"    type="hidden"  value="http://www.test.com/response" >
  <input name="confirmationUrl"    type="hidden"  value="http://www.test.com/confirmation" >
  <input name="Submit"        type="submit"  value="Enviar" >
</form>