Bluemix APIc that a user should be able to edit the invitation email and its signature in APIc develop portal (API Manager).
In Bluemix API Connect is integrated with the Bluemix platform so names get set based on the user records in IBMid and get pushed through to the API Manager and also the IBMid is the creator of the Bluemix APIc service instance. Currently, the signature comes from the UAA name in the Bluemix backend UAA database. The user is not able to change the name from IBMid profile edit page for this UAA family name and UAA given name by design.
NOTICE TO EU RESIDENTS: per EU Data Protection Policy, if you wish to remove your personal information from the IBM ideas portal, please login to the ideas portal using your previously registered information then change your email to "firstname.lastname@example.org" and first name to "anonymous" and last name to "anonymous". This will ensure that IBM will not send any emails to you about all idea submissions