my code is as below

aaa = "['https://google.com', 'https://yahoo.com']"
REQUEST = f'{"siteUrls": {aaa}}'
print(REQUEST)

I've tried

aaa = "['https://google.com', 'https://yahoo.com']"
REQUEST = {"siteUrls": {}}.format(aaa)
print(REQUEST)

and

aaa = "['https://google.com', 'https://yahoo.com']"
REQUEST = {"siteUrls": %s}