curl --request POST \
--url https://api.omnisend.com/v5/product-categories \
--header 'accept: application/json' \
--header 'content-type: application/json'
curl --request PATCH \
--url https://api.omnisend.com/v5/product-categories/categoryID \
--header 'accept: application/json' \
--header 'content-type: application/json'