Refactor webhook handler

curl example

curl -sS \
  "https://example-data.com/api/v1/tasks/594" \
  -H "Accept: application/json"

JavaScript example

const res = await fetch(
  "https://example-data.com/api/v1/tasks/594"
);
const task = await res.json();

TypeScript example

// Download once: mkdir -p types && curl -o types/tasks.d.ts https://example-data.com/types/tasks.d.ts
import type { Task } from "./types/tasks";

const res = await fetch(
  "https://example-data.com/api/v1/tasks/594"
);
const task = (await res.json()) as Task;

Python example

import requests

res = requests.get(
    "https://example-data.com/api/v1/tasks/594"
)
task = res.json()