curl \
-X POST \
--data "grant_type=authorization_code&code=ANOikvfkxIzUKVsJdAOk&redirect_uri=https://b...content-available-to-author-only...d.com/&client_id=amzn1.application-oa2-client.ad1b1ee8c9da4e1bb9ad7509232c8440&client_secret=amzn1.oa2-cs.v1.d53be71f80165296039af2c258b19be2057929e178df31d176426f3942f3951d" \
https://a...content-available-to-author-only...n.com/auth/o2/token
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