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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_tow_guide(session, vehicle_index):
 """Get tow guide information."""

    profile = get_profile(session)
    _validate_vehicle(vehicle_index, profile)
    return session.post(TOW_URL, {
        'vin': profile['vehicles'][vehicle_index]['vin']
    }).json()