{
  "role_id": "AA",
  "migration_version": "1.0.0",
  "legacy_mapping": {
    "OLD_ROLE_AA": {
      "new_role": "AA",
      "migration_status": "in_progress",
      "mapped_permissions": ["READ", "QUERY", "EXPORT"],
      "unmapped_permissions": [],
      "risk_level": "medium"
    }
  },
  "data_transformation": {
    "attribute_mapping": {
      "legacy_attr_1": "new_attr_1",
      "legacy_attr_2": "new_attr_2"
    },
    "validation_rules": [
      "data_integrity_check",
      "permission_consistency_check"
    ]
  },
  "evidence": {
    "pre_migration_snapshot": "archive/role-aa/pre-migration/",
    "post_migration_snapshot": "archive/role-aa/post-migration/",
    "migration_log": "logs/role-aa/migration.log"
  }
}