How to transfer property from response when contains only values ?

In this case Property Transfer transfers the entire response contents, including the quotes around the value. To transfer the unquoted value, you need to use a Groovy script instead.

For example, you can extract the value to a test case property named timestamp:

// Replace "Test Step 1" with your test step name
def value = testRunner.testCase.testSteps["Test Step 1"].testRequest.response.responseContent
// remove the enclosing quotes
value = value.replaceAll('^"|"$', '')

testRunner.testCase.setPropertyValue("timestamp", value)

and in the second request, use

${#TestCase#timestamp}