curl --request POST \
  --url https://ted.sandbox.lerian.net/v1/transfers/signing/prepare \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Idempotency: <x-idempotency>' \
  --header 'X-Organization-Id: <x-organization-id>' \
  --data '
{
  "initiationId": "019c96a0-aa10-7abc-d1e2-8c9d0e1f2a3b"
}
'

package main

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

func main() {

	url := "https://ted.sandbox.lerian.net/v1/transfers/signing/prepare"

	payload := strings.NewReader("{\n  \"initiationId\": \"019c96a0-aa10-7abc-d1e2-8c9d0e1f2a3b\"\n}")

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

	req.Header.Add("X-Organization-Id", "<x-organization-id>")
	req.Header.Add("X-Idempotency", "<x-idempotency>")
	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))

}

const options = {
  method: 'POST',
  headers: {
    'X-Organization-Id': '<x-organization-id>',
    'X-Idempotency': '<x-idempotency>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({initiationId: '019c96a0-aa10-7abc-d1e2-8c9d0e1f2a3b'})
};

fetch('https://ted.sandbox.lerian.net/v1/transfers/signing/prepare', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://ted.sandbox.lerian.net/v1/transfers/signing/prepare"

payload = { "initiationId": "019c96a0-aa10-7abc-d1e2-8c9d0e1f2a3b" }
headers = {
    "X-Organization-Id": "<x-organization-id>",
    "X-Idempotency": "<x-idempotency>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)