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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 sign_filter_permissions(permissions):
 """ Return a compressed, signed dump of the json blob. This function expects a json blob that is a dictionary containing model dotted names as keys. Those keys each have a value that is a list of dictionaries, each of which contains the keys 'filters' and 'actions': The key 'filters' key is a dict that is a filter to be applied to a django queryset. The key 'actions' is a list of DRF methods that can be called for this model's viewset. For example: { 'accounts.Account': [ { 'filters': { 'email': 'marcel@chewse.com', 'organizations__name': 'Chewse' }, 'actions': ['create', 'partial_update'] } ] } """

    permissions = {key.lower(): value for key, value in permissions.iteritems()}
    return signing.dumps(permissions, compress=True)