Please add new signature to México issuer [Risolto]

Please add a new signature for Mexican banknotes, data as follows:

• the issuer (copy the link from Numista to avoid misunderstandings): https://en.numista.com/catalogue/mexique-1.html 
• the name of the issuing entity they’re part of (if needed, you can request its addition): https://en.numista.com/catalogue/issuing_entity.php?id=1435 
• the name of the person who signed: Raul Sierra Otero
• the Wikidata code for this person (for example, Q1641554 for the Swiss politician Johann Hirter):
• the role of this person in the country, in English, French and Spanish: Main Cashier, , Cajero Principal
• some sources that document the existence of this person: https://banknotedb.com/?signature=3448 https://www.banknote.ws/COLLECTION/countries/AME/MEX/MEX-GENERAL/MEX0116.htm 
• the date range in which this person had this specific role in the issuing entity: 1999-2002
• a black and white image of the signature (SVG, PNG, or JPG 200 ⨯ 200 pixels):  

Thanks in advance.

It's done, Daniel. Thanks!