如何在rasa2.0中使用http parse post请求解析消息时指定型号名称？

action_endpoint:
  url: "http://localhost:5055/webhook"

nlu:
  url: "http://localhost:5005/model/parse"
  request_method: "POST"
  headers:
    Content-Type: "application/json"

http:
  url: "http://localhost:5005/model/parse"
  method: "POST"
  headers:
    Content-Type: "application/json"

pipeline:
  - name: "WhitespaceTokenizer"
  - name: "RegexFeaturizer"
  - name: "CRFEntityExtractor"
  - name: "EntitySynonymMapper"
  - name: "CountVectorsFeaturizer"
  - name: "CountVectorsFeaturizer"
    analyzer: "char_wb"
    min_ngram: 1
    max_ngram: 4
  - name: "DIETClassifier"
    epochs: 100
  - name: "EntityExtractor_http"
    url: "http://localhost:5005/model/parse"
    method: "POST"
    headers:
      Content-Type: "application/json"

from typing import Any, Text, Dict, List
from rasa_sdk import Action, Tracker
from rasa_sdk.executor import CollectingDispatcher

class ActionParseMessage(Action):
    def name(self) -> Text:
        return "action_parse_message"

    def run(self, dispatcher: CollectingDispatcher,
            tracker: Tracker,
            domain: Dict[Text, Any]) -> List[Dict[Text, Any]]:
        
        message = tracker.latest_message.get("text")
        model_name = tracker.latest_message.get("model_name")
        
        # 在这里可以根据指定的型号名称进行相应的处理
        
        dispatcher.utter_message(text=f"收到消息：{message}，型号名称：{model_name}")
        
        return []

actions:
  - action_parse_message