Add a Script Assertion for the rest request test step with below script.
- Define your expected data as shown in the snippet below as needed
- It compares each key value with expected data.
JsonSlurper can be used to parse the response.
//Check if the response is not empty
assert context.response, 'Response is empty or null'
//Define expected data
def expectedData = [name: 'aaaaaaaaaaa', emailid: 'bbbbbbbbb']
def json = new groovy.json.JsonSlurper().parseText(context.response)
//Checks all elements of resource one by one and compare with expectedData
json.resource.each {k, v -> assert v == expectedData."$k" }