When creating a new client make 2 HTTP Request calls but one as input from the other

Hello, I installed the FLOW application in the store and I require that when creating a new client, 2 calls are made to an external API (a CRM).

I am using the “Send HTTP Request” action and the first request works correctly, as output it gives me a JSON of the type:

{
  "callId": "62200df10ecc4d3aa430f9600289b84e",
  "errorCode": 0,
  "apiVersion": 2,
  "statusCode": 200,
  "statusReason": "OK",
  "time": "2021-12-23T19:27:54.054Z",
  "regToken": "tk2.LTE.AcbH8kkK3A.uXOTDC8CHoRUzDB9klD0a_McScssvx8Hxq13naavgjQ.Y-B4sUkGsoEtDdYrykugwCAbeps2Xif7LgNfIOqBuPyE0pO9MuOWwyE2JC7hBpnlMdYSgsK77ZlaTddBFKAA3w.sc3"
}

Later I need to obtain the value of “regToken” to send it in a second “HTTP request” and that is where I am confused on how to do that json.parse and pass the value.

I attach an example image:

Thanks for your answers in advance.