import requests

url = 'https://elle.tlu.ee/api/tools/wordlist'
myobj = {
    "corpusTextIds": [
        "86f4f30b-8348-4b0b-8d5d-cacc65d3ec1e",
        "71be97c8-046b-4850-8bc7-cad05e10f577",
        "b3f1a73f-d5d3-41f4-b2b1-2c5b861889dc"
    ],
    "ownTexts": None,
    "type": "LEMMAS",
    "excludeStopwords": True,
    "customStopwords": None,
    "keepCapitalization": False,
    "minFrequency": "1"
}

x = requests.post(url, json = myobj)

print(x.text)