How to add/update approvers for environments through REST API on Azure Devops

I am trying to make hundreds of environments on Azure Devops using a PowerShell script and REST API. I need to include approvers on some of it.
I can already create those environments, I just need to add/update the approvers for it.
How can I do that? I can't seem to find anything on the documentation

To add /update the approvers for environments, you can use the following Rest API:

Add approvers for environment:

Rest API:

Post https://dev.azure.com/Orgname/Project/_apis/pipelines/checks/configurations?api-version=api-version=7.1-preview.1

Request Body:

{
    "type":{
        "id":"8C6F20A7-A545-4486-9777-F762FAFE0D4D",
        "name":"Approval"
    },
    "settings":{
         "approvers":[{"displayName":"{UserName}","id":"{UserID}"}],
         "executionOrder":1,
         "blockedApprovers":[],
         "minRequiredApprovers":0,
         "requesterCannotBeApprover":false
    },
     "resource":
         {
             "type":"environment",
             "id":"{EnvironmentID}",
             "name":"{EnvironmentName}"
         }
}

Update approvers for environment:

Rest API:

PATCH https://dev.azure.com/{organization}/{project}/_apis/pipelines/checks/configurations/{Configurationid}?api-version=7.1-preview.1

Request Body:

{
    "type":{
        "id":"8C6F20A7-A545-4486-9777-F762FAFE0D4D",
        "name":"Approval"
    },
    "settings":{
         "approvers":[
             {
             "displayName":"{Username}",
             "id":"{UserID}"
             },
             {
             "displayName":"{Username}",
             "id":"{UserID}"
             }
             ],
         "executionOrder":1,
         "blockedApprovers":[],
         "minRequiredApprovers":0,
         "requesterCannotBeApprover":false
    },
     "resource":
         {
             "type":"environment",
             "id":"{EnvironmentID}",
             "name":"{EnvironmentName}"
         }

}

For the configuartionID, you can get the ID in the following Rest API: Check Configurations - List

Since the requirement has no official sample, you can check the NetWork trace for more detailed info.

For example: Manually add/update the approvers and Check network tab in Browser Developer tool.