Update

curl --request PUT \
  --url https://api.incident.io/v2/telemetry/data_sources/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "datadog_config": {
    "api_key": "abc123",
    "app_key": "abc123"
  },
  "grafana_config": {
    "api_key": "glsa_123",
    "api_url": "grafana.example.com"
  },
  "name": "Production Grafana"
}
'

import requests

url = "https://api.incident.io/v2/telemetry/data_sources/{id}"

payload = {
    "datadog_config": {
        "api_key": "abc123",
        "app_key": "abc123"
    },
    "grafana_config": {
        "api_key": "glsa_123",
        "api_url": "grafana.example.com"
    },
    "name": "Production Grafana"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    datadog_config: {api_key: 'abc123', app_key: 'abc123'},
    grafana_config: {api_key: 'glsa_123', api_url: 'grafana.example.com'},
    name: 'Production Grafana'
  })
};

fetch('https://api.incident.io/v2/telemetry/data_sources/{id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.incident.io/v2/telemetry/data_sources/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'datadog_config' => [
        'api_key' => 'abc123',
        'app_key' => 'abc123'
    ],
    'grafana_config' => [
        'api_key' => 'glsa_123',
        'api_url' => 'grafana.example.com'
    ],
    'name' => 'Production Grafana'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.incident.io/v2/telemetry/data_sources/{id}"

	payload := strings.NewReader("{\n  \"datadog_config\": {\n    \"api_key\": \"abc123\",\n    \"app_key\": \"abc123\"\n  },\n  \"grafana_config\": {\n    \"api_key\": \"glsa_123\",\n    \"api_url\": \"grafana.example.com\"\n  },\n  \"name\": \"Production Grafana\"\n}")

	req, _ := http.NewRequest("PUT", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.put("https://api.incident.io/v2/telemetry/data_sources/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"datadog_config\": {\n    \"api_key\": \"abc123\",\n    \"app_key\": \"abc123\"\n  },\n  \"grafana_config\": {\n    \"api_key\": \"glsa_123\",\n    \"api_url\": \"grafana.example.com\"\n  },\n  \"name\": \"Production Grafana\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.incident.io/v2/telemetry/data_sources/{id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"datadog_config\": {\n    \"api_key\": \"abc123\",\n    \"app_key\": \"abc123\"\n  },\n  \"grafana_config\": {\n    \"api_key\": \"glsa_123\",\n    \"api_url\": \"grafana.example.com\"\n  },\n  \"name\": \"Production Grafana\"\n}"

response = http.request(request)
puts response.read_body

{
  "data_source": {
    "created_at": "2021-08-17T13:28:57.801578Z",
    "enabled": true,
    "id": "01G0J1EXE7AXZ2C93K61WBPYEH",
    "name": "Primary Prometheus",
    "provider": "grafana",
    "source_type": "grafana",
    "updated_at": "2021-08-17T13:28:57.801578Z",
    "version": "8.5.27"
  }
}