Using a for_each on a data block

Terraform
1

I am trying to use a foreach in my data block to get the members of each azuread_groups

lz_subscription = {
  identity = {
  subscription_display_name = " Identity"
  subscription_name         = "Identity"
  subscription_alias_name   = "Identity"
  subscription_workload     = "Production"
  azuread_groups = {
  SupportRequestContrib = {
    name             = "SupportRequestContrib"
    security_enabled = "true"
    role             = "Support Request Contributor"
    members = [
      "Elevated-Cloud"
    ]
  }

my data block

data "azuread_groups" "member_groups" {

}

I’m running into problems trying to figure out how to get inside of the azuread_groups part and get only the members.