How to search lead with API suiteCRM

I am working with the suitecrm API and I want to perform a search for leads for a specific data, in this case the email but adding the condition shows this message.
stdClass Object
[name] => Access Denied
[number] => 40
[description] => You do not have access

$get_entry_list_parameters = array(
‘session’ => $session_id,
‘module_name’ => ‘Leads’,//Opportunities, Leads, Accounts,Campaigns
‘query’ => “leads.email1 =”,
‘order_by’ => “”,
‘offset’ => ‘0’,
‘select_fields’ => array(

     A list of link names and the fields to be returned for each link name.
     Example: 'link_name_to_fields_array' => array(array('name' => 'email_addresses', 'value' => array('id', 'email_address', 'opt_out', 'primary_address')))
     'link_name_to_fields_array' => array(
     //The maximum number of results to return.
     'max_results' => '1000',
     //To exclude deleted records
     'deleted' => '0',
     //If only records marked as favorites should be returned.
     'Favorites' => false,