curl --request POST \
  --url https://api.kit.com/v4/subscribers/{subscriber_id}/location \
  --header 'Content-Type: application/json' \
  --header 'X-Kit-Api-Key: <api-key>' \
  --data '
{
  "location": {
    "city": "Boise",
    "state_province": "Idaho",
    "country_code": "US",
    "latitude": 43.62,
    "longitude": -116.2,
    "timezone": "America/Denver"
  }
}
'

require 'uri'
require 'net/http'

url = URI("https://api.kit.com/v4/subscribers/{subscriber_id}/location")

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

request = Net::HTTP::Post.new(url)
request["X-Kit-Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"location\": {\n    \"city\": \"Boise\",\n    \"state_province\": \"Idaho\",\n    \"country_code\": \"US\",\n    \"latitude\": 43.62,\n    \"longitude\": -116.2,\n    \"timezone\": \"America/Denver\"\n  }\n}"

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

const options = {
  method: 'POST',
  headers: {'X-Kit-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    location: {
      city: 'Boise',
      state_province: 'Idaho',
      country_code: 'US',
      latitude: 43.62,
      longitude: -116.2,
      timezone: 'America/Denver'
    }
  })
};

fetch('https://api.kit.com/v4/subscribers/{subscriber_id}/location', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

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

func main() {

	url := "https://api.kit.com/v4/subscribers/{subscriber_id}/location"

	payload := strings.NewReader("{\n  \"location\": {\n    \"city\": \"Boise\",\n    \"state_province\": \"Idaho\",\n    \"country_code\": \"US\",\n    \"latitude\": 43.62,\n    \"longitude\": -116.2,\n    \"timezone\": \"America/Denver\"\n  }\n}")

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

	req.Header.Add("X-Kit-Api-Key", "<api-key>")
	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))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.kit.com/v4/subscribers/{subscriber_id}/location",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'location' => [
        'city' => 'Boise',
        'state_province' => 'Idaho',
        'country_code' => 'US',
        'latitude' => 43.62,
        'longitude' => -116.2,
        'timezone' => 'America/Denver'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Kit-Api-Key: <api-key>"
  ],
]);

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

curl_close($curl);

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

import requests

url = "https://api.kit.com/v4/subscribers/{subscriber_id}/location"

payload = { "location": {
        "city": "Boise",
        "state_province": "Idaho",
        "country_code": "US",
        "latitude": 43.62,
        "longitude": -116.2,
        "timezone": "America/Denver"
    } }
headers = {
    "X-Kit-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "subscriber": {
    "id": 1100,
    "location": {
      "city": "Boise",
      "state_province": "Idaho",
      "country_code": "US",
      "latitude": 43.62,
      "longitude": -116.2,
      "timezone": "America/Denver"
    }
  }
}

{
  "errors": [
    "The access token is invalid"
  ]
}

{
  "errors": [
    "Not Found"
  ]
}

{
  "errors": [
    "Country code can't be blank"
  ]
}