curl --request POST \
  --url https://api.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reminderType": "EMAIL_REMINDER",
  "reminderConfigs": {
    "emails": [
      "hoge@i.moneyforward.com",
      "dummyaccount@i.moneyforward.com"
    ]
  },
  "remindBeforeConfig": {
    "unit": "days",
    "value": 3
  }
}
'

import requests

url = "https://api.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders"

payload = {
    "reminderType": "EMAIL_REMINDER",
    "reminderConfigs": { "emails": ["hoge@i.moneyforward.com", "dummyaccount@i.moneyforward.com"] },
    "remindBeforeConfig": {
        "unit": "days",
        "value": 3
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    reminderType: 'EMAIL_REMINDER',
    reminderConfigs: {emails: ['hoge@i.moneyforward.com', 'dummyaccount@i.moneyforward.com']},
    remindBeforeConfig: {unit: 'days', value: 3}
  })
};

fetch('https://api.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders', 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.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders",
  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([
    'reminderType' => 'EMAIL_REMINDER',
    'reminderConfigs' => [
        'emails' => [
                'hoge@i.moneyforward.com',
                'dummyaccount@i.moneyforward.com'
        ]
    ],
    'remindBeforeConfig' => [
        'unit' => 'days',
        'value' => 3
    ]
  ]),
  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.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders"

	payload := strings.NewReader("{\n  \"reminderType\": \"EMAIL_REMINDER\",\n  \"reminderConfigs\": {\n    \"emails\": [\n      \"hoge@i.moneyforward.com\",\n      \"dummyaccount@i.moneyforward.com\"\n    ]\n  },\n  \"remindBeforeConfig\": {\n    \"unit\": \"days\",\n    \"value\": 3\n  }\n}")

	req, _ := http.NewRequest("POST", 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.post("https://api.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reminderType\": \"EMAIL_REMINDER\",\n  \"reminderConfigs\": {\n    \"emails\": [\n      \"hoge@i.moneyforward.com\",\n      \"dummyaccount@i.moneyforward.com\"\n    ]\n  },\n  \"remindBeforeConfig\": {\n    \"unit\": \"days\",\n    \"value\": 3\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.itmc.i.moneyforward.com/api/v1/organizations/{organizationId}/services/{serviceId}/contracts/{contractId}/contract-reminders")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reminderType\": \"EMAIL_REMINDER\",\n  \"reminderConfigs\": {\n    \"emails\": [\n      \"hoge@i.moneyforward.com\",\n      \"dummyaccount@i.moneyforward.com\"\n    ]\n  },\n  \"remindBeforeConfig\": {\n    \"unit\": \"days\",\n    \"value\": 3\n  }\n}"

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

{
  "id": 1,
  "reminderType": "SLACK_REMINDER",
  "reminderConfigs": {
    "slackWorkspaceName": "Money Forward",
    "slackChannels": [
      {
        "id": "C01ME8GUXXX",
        "name": "#general"
      }
    ]
  },
  "contractId": 1,
  "remindBeforeConfig": {
    "unit": "days",
    "value": 3
  }
}