import requests
import time

log_data = {
    "streams": [{
        "stream": {"app": "myapp", "env": "dev"},
        "values": [[str(int(time.time()*1e9)), "This is a log line"]]
    }]
}

requests.post("http://192.168.50.108:3100/loki/api/v1/push", json=log_data)