Querying json data in POSTGRES and retrieving records where key does not exist

Question

I have a table, Results which has metadata_json as column. I would like to ensure there is no element called _migrationStatus in metadata element and pick only those records. How do i achieve this

Here is a sample json

[{
        "id": 4107630,
        "relativePath": "losses-hd/6936326/FullEP/",
        "absolutePath": "s3a://path",
        "resultType": "PLT",
        "metadata": {
            "type": "FULL_EP",
"_migrationStatus": "SUCCESS"
}
}]

The following query does not work. I want only those records where _migrationStatus does not exist

SELECT * FROM results_metadata WHERE metadata_json ::jsonb ? '_migrationStatus'