ImageBlob fails to be retrieved from PostgreSQL database

[Jason Schindler]

Overview of the issue

While working #134 I tried to change the devDatabaseType to postgresql for the mvn-oauth-angular sample and the E2E tests failed.

Exception is:

Unexpected error occurred: org.hibernate.exception.DataException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not execute query
...
Caused by: org.postgresql.util.PSQLException: Bad value for type long

Reproduce the error

See: 2419126

The exception is visible when trying to load the SpaceEvent entity from the UI

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