Multi channel associations

				
					{
    id = 50,
    version = 1,
    association_groups_count = 2,
    association_groups = {
        {group_id = 1, group_nodes = [{node_id = 1, endpoint_id = 0}, {node_id = 2, endpoint_id = 0}]},
        {group_id = 2, group_nodes = [{node_id = 1, endpoint_id = 0}, {node_id = 3, endpoint_id = 0}]},
        ...
    }
}