In Step 2, instead of ad.accountmanager.key.controller use ad. accountmanager.key.ops from events-service-api-store.properties file. Encode ad.accountmanager.key.ops value using https://www.base64encode.org/
Sometimes the below SQL query fails with ERROR 1292 (22007): Truncated incorrect DOUBLE value: 'synthetic-tag' update DATABASECHANGELOG set MD5SUM='7:834d03b3da7773ee8b2d5c0b9dd3aa96' where id=21;In that case, try addressing the checksum issue using ...