{
    "credentials": [
        {
            "passwordCredentials": {
                "username": "test_user",
                "password": "secretsecret"
            }
        },
        {
            "OS-KSEC2-ec2Credentials": {
                "username": "test_user",
                "secret": "secretsecret",
                "signature": "bbb"
            }
        }
    ],
    "credentials_links": []
}