How to receive the callback of Tencent SMS event?

official document address:
https://cloud.tencent.com/doc...

does not specify which fields are in the callback and how they are received.

tried get and post to receive, but did not get any useful data.

have friends who have used it to help with the answer, thank you.

SMS Tencent Tencent-Cloud
Jun.21,2022 
get_json_request();

you can get the JSON and parse it yourself.
but now do not know how to determine the source, the JSON of POST can be submitted by other places, there is a security risk.

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