Owner or API key
DELETE /v1/users/{id}
Remove a user from the account. The last owner cannot be removed. The id comes from GET /v1/me.
Owner or API key. {id} is the numeric user id from GET /v1/me. You cannot delete the last owner. A non-numeric id is 400.
curl -sS -X DELETE "$BASE/v1/users/2" -H "X-API-Key: $UW_KEY"
The response is the account object. A member who calls this is 403.

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