import json
# I have assumed your dictionary like that
data = {"message":"{"_":"user","pFlags":{"contact":true},"flags":2175,"id":379951860,"access_hash":"6967195540985199805","first_name":"پژوا","last_name":"روزبهی","username":"mramtd2","phone":"989157145632","photo":{"_":"userProfilePhoto","photo_id":"1631880813210609625","photo_small":{"_":"fileLocation","dc_id":4,"volume_id":"448413446","local_id":476387,"secret":"655623158723369503"},"photo_big":{"_":"fileLocation","dc_id":4,"volume_id":"448413446","local_id":476389,"secret":"13993366131879811943"}},"status":{"_":"userStatusOffline","was_online":1558046876}}","phone":"989157145632","@version":"1","typ":"telegram_contacts","access_hash":"6967195540985199805","id":379951860,"@timestamp":"2020-01-26T13:50:12.793Z","path":"/home/user/mirror_01/users_5d65f610ec18aa615a5f580c.log","username":"mramtd2","type":"redis","flags":2175,"host":"ubuntu","imported_from":"telegram_contacts"}
# The data in "message" need to be loaded on JSON format to access it.
data["message"] = json.loads(data["message"])
# Now, you can print or whatever you want with all the data
print(data["message"]["id"])
print(data["message"]["first_name"])
print(data["message"]["last_name"])
print(data["message"]["phone"]) # There is phone info both in data["message"]["phone"] and data["phone"]. They are identical. You can use whichever you want.
# Optional
# If you want, you can assign data["message"] to a variable.
finalData = data["message"]
# Then you can access the info that you need from finalData
print(finalData["first_name"])