PUT
/buyers/{buyerId}/buyer_users/{buyerUserId}/activate
curl \
--request PUT 'https://app.getfoundation.com/api/external/v1/buyers/{buyerId}/buyer_users/{buyerUserId}/activate' \
--header "X-API-Key: $API_KEY"
curl \
--request PUT 'https://app.getfoundation.com/api/external/v1/buyers/{buyerId}/buyer_users/{buyerUserId}/activate' \
--header "X-API-Key: $API_KEY"