{
    "trust": {
        "expires_at": "2014-12-30T23:59:59.999999Z",
        "impersonation": false,
        "project_id": "'$PROJECT_ID'",
        "roles": [
            {
                "name": "admin"
            }
        ],
        "trustee_user_id": "'$DEMO_USER_ID'",
        "trustor_user_id": "'$ADMIN_USER_ID'"
    }
}