{
  "schema": {
  ...
  },
  "payload": {
        "source": {  //<1>
        "version": "1.8.0.Final",
        "connector": "mysql",
        ...
    },
    "databaseName": "inventory", //<2>
    "schemaName": null,
    "ddl": "ALTER TABLE customers ADD COLUMN middle_name VARCHAR(2000)", //<3>
    "tableChanges":  ... 
  }
}