title: Pandas: Dataframe has just one entry
body: <p>I am currently working on comparing Corona data of Germany from different sources. For this I used the RKI API and get the following as Pandas Dataframe:</p>
  <p>0          ObjectId                    [{'name': 'IdBundesland', 'type': 'esriFieldTy...                   True  [{'attributes': {'IdBundesland': 5, 'Bundeslan...           ObjectId                              True</p>
  <p>But this output is wrong, because it just has one entry and the entry does'nt look like it should. Does anyone have an idea what could be the reason? Maybe <code>pd.json_normalize(r_json)</code> but without this I get a ValueError.</p>
  <p>My Code (Link to API in Code):</p>
  <pre class="lang-py prettyprint-override"><code>
  import requests
  import pandas as pd
  from pandas.io.json import json_normalize
  import json
  
  link = 'https://services7.arcgis.com/mOBPykOjAyBO2ZKk/arcgis/rest/services/RKI_COVID19/FeatureServer/0/query?where=1%3D1&amp;outFields=*&amp;outSR=4326&amp;f=json'
  payload = {}
  response = requests.request(
      method='get',
      url=link,
      params=payload,
      timeout=5
  )
  
  r_json = response.json()
  r_json = pd.json_normalize(r_json)
  # print(response.status_code)
  # print(r_json)
  df = pd.DataFrame.from_dict(r_json)
  print(df)
  
  </code></pre>