報告相談 

I’m going to report on the subject.

From individuals to non-governmental organizations, there seems to be formal written reporting, appeal procedures, and remedies.
It seems that it is possible to send and submit in writing by using Google Translate.
Also, the format is not specified.

If accepted, it will be reviewed by the Working Group together with the Secretariat and the government’s view on alleged human rights violations will be sought.
It seems that the report will be subsequently deliberated and recommendations will be made to the parties concerned.

United Nations Information Center
https://www.ohchr.org/EN/HRBodies/HRC/ComplaintProcedure/Pages/HRCComplaintProcedureIndex.aspx

Communications intended for handling under the Human Rights Council  complaint procedure may be addressed to:

Complaint Procedure Unit
Human Rights Council Branch
Office of the United Nations High Commissioner for Human Rights
United Nations Office at Geneva
CH-1211 Geneva 10, Switzerland
Fax: (41 22) 917 90 11
E-mail: CP@ohchr.org

The petition can also be sent to the Office of the United Nations High Commissioner for Human Rights in each country or region.