import json
from datetime import datetime

payload = """{\"attachments\": [\n        {\n            \"title\": \"{title}",\n            \"pretext\": \"Did someone say M62!? \\ud83d\\ude27\",\n            \"text\": \"\",\n            \"mrkdwn_in\": [\"text\", \"pretext\"],\n            \"footer\": \"ec2-54-246-210-90.eu-west-1.compute.amazonaws.com\",\n            \"footer_icon\": \"https://i.imgur.com/ADsI87O.png\",\n            \"ts\": \"1570917914\",\n            \"fields\": [\n\t\t    \t{\n\t\t        \"title\": \"{congestionTitle}\",\n\t\t        \"value\": \"{congestionMessage}\",\n\t\t        \"short\": false\n\t\t    \t},\n\t\t    \t{\n\t\t        \"title\": \"{accidentTitle}\",\n\t\t        \"value\": \"{accidentMessage}\",\n\t\t        \"short\": false\n\t\t    \t},\n\t    \t\t{\n\t\t        \"title\": \"\",\n\t\t        \"value\": \"{end} \",\n\t\t        \"short\": false\n\t\t    \t}\n\t    \t]\n        }\n    ]\n}"""

timeNow = datetime.now().timestamp()

jsonPayload = json.loads(payload)
print(jsonPayload)

jsonPayload['attachments'][0]['title'] = f'{messageTitle}'
print(jsonPayload['attachments'][0]['title'])

jsonPayload['attachments'][0]['ts'] = timeNow
print(jsonPayload['attachments'][0]['ts'])

jsonPayload['attachments'][0]['fields'][0]['title'] = f'{congestionTitle}'
print(jsonPayload['attachments'][0]['fields'][0]['title'])

jsonPayload['attachments'][0]['fields'][0]['value'] = f'{congestionMessage}'
print(jsonPayload['attachments'][0]['fields'][0]['value'])

jsonPayload['attachments'][0]['fields'][1]['title'] = f'{accidentTitle}'
print(jsonPayload['attachments'][0]['fields'][1]['title'])

jsonPayload['attachments'][0]['fields'][1]['value'] = f'{accidentMessage}'
print(jsonPayload['attachments'][0]['fields'][1]['value'])

jsonPayload['attachments'][0]['fields'][2]['value'] = f'{end}'
print(jsonPayload['attachments'][0]['fields'][2]['value'])