txt_situ_mens = linha_csv[11].replace("/'", "/'")

{'delivered': '2018-09-15 00:35:00+0000', 'read': '2018-09-15 00:35:00+0000', 'received': '2018-09-15 00:33:43+0000'}

{"delivered": "2018-09-15 00:35:00+0000", "read": "2018-09-15 00:35:00+0000", "received": "2018-09-15 00:33:43+0000"}