curl --request GET \
  --url https://controller.platform.simplecloud.app/v0/plugin-collection-assignments \
  --header 'X-Network-ID: <x-network-id>' \
  --header 'X-Network-Secret: <x-network-secret>'

{
  "count": 123,
  "plugin_collection_assignments": [
    {
      "created_at": "<string>",
      "id": "<string>",
      "mc_network_id": "<string>",
      "persistent_server_id": "<string>",
      "plugin_collection_id": "<string>",
      "plugin_collection_name": "<string>",
      "server_group_id": "<string>",
      "updated_at": "<string>"
    }
  ]
}