examples/file_mac/python/hmac_sha256_256bittag_test_keyset.json

{
    "primaryKeyId": 691856985,
    "key": [{
        "keyData": {
            "typeUrl": "type.googleapis.com/google.crypto.tink.HmacKey",
            "keyMaterialType": "SYMMETRIC",
            "value": "EgQIAxAgGiDZsmkTufMG/XlKlk9m7bqxustjUPT2YULEVm8mOp2mSA\u003d\u003d"
        },
        "outputPrefixType": "TINK",
        "keyId": 691856985,
        "status": "ENABLED"
    }]
}