Get Upstream by ID

OK

{
  "scheme": "http",
  "pass_host": "pass",
  "nodes": [
    {
      "host": "127.0.0.1",
      "port": 80,
      "weight": 1
    },
    {
      "host": "foo.com",
      "port": 80,
      "weight": 2
    }
  ],
  "hash_on": "vars",
  "update_time": 1634543819,
  "key": "remote_addr",
  "create_time": 1634539759,
  "id": "1",
  "type": "chash"
}

Upstream not found

{
  "error_msg": "string"
}