async def METHOD_NAME(metadata_store, rest_api):
    """
    Test whether an error is returned if we try to change entry with the REST API and missing JSON data
    """
    channel_pk = hexlify(metadata_store.ChannelNode._my_key.pub().key_to_bin()[10:])
    await do_request(rest_api, f'metadata/{channel_pk}/123', expected_code=400, request_type='PATCH', post_data='abc')