Need a Simple Request URL

Need a simple Request URL that Postman will push a POST request in the format of application/json to the Request URL in this example format:

// Request received
{
"challenge": "ajls384kdjx98XX", // Value to be returned as is for the App
"token": "123456", // For Token use, refer to the document “Verify event source by Token”
"type": "url_verification" // Indicating this is a verification request
}

After receiving POST verification request, you need to parse the challenge value and return such value as is within 1s as the response.

// You need to respond as follows
{
"challenge": "ajls384kdjx98XX" // Value to be returned as is for the App
}