Case

switch (action.type) {
   case CLIENTS_FIND:
     const response = action.payload.data;
       return state.withMutations(map => {
           map
           .set('status', 'processed')
           .set('keyword', response.keyword)
           .set('countClients', response.countClients)
           .set('responseClients', JSON.parse(response.listClients));
       })
     break;
   case CHANGE_PAGE:
     return state.set('page', action.currentPage);
     break;
   case CHANGE_KEYWORD:
     return state.set('keyword', action.keyword);
     break;
   default:
   return state;
 }