curl --request POST \
  --url https://router-api.initia.xyz/nft \
  --header 'Content-Type: application/json' \
  --data '
{
  "from_address": "init1abc...",
  "from_chain_id": "echelon-1",
  "to_address": "init1def...",
  "to_chain_id": "yominet-1",
  "token_ids": [
    "1",
    "2"
  ],
  "collection_address": "0xabc...",
  "class_id": "wasm.init1.../nft-transfer/channel-0/..."
}
'

import requests

url = "https://router-api.initia.xyz/nft"

payload = {
    "from_address": "init1abc...",
    "from_chain_id": "echelon-1",
    "to_address": "init1def...",
    "to_chain_id": "yominet-1",
    "token_ids": ["1", "2"],
    "collection_address": "0xabc...",
    "class_id": "wasm.init1.../nft-transfer/channel-0/..."
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    from_address: 'init1abc...',
    from_chain_id: 'echelon-1',
    to_address: 'init1def...',
    to_chain_id: 'yominet-1',
    token_ids: ['1', '2'],
    collection_address: '0xabc...',
    class_id: 'wasm.init1.../nft-transfer/channel-0/...'
  })
};

fetch('https://router-api.initia.xyz/nft', 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://router-api.initia.xyz/nft",
  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([
    'from_address' => 'init1abc...',
    'from_chain_id' => 'echelon-1',
    'to_address' => 'init1def...',
    'to_chain_id' => 'yominet-1',
    'token_ids' => [
        '1',
        '2'
    ],
    'collection_address' => '0xabc...',
    'class_id' => 'wasm.init1.../nft-transfer/channel-0/...'
  ]),
  CURLOPT_HTTPHEADER => [
    "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://router-api.initia.xyz/nft"

	payload := strings.NewReader("{\n  \"from_address\": \"init1abc...\",\n  \"from_chain_id\": \"echelon-1\",\n  \"to_address\": \"init1def...\",\n  \"to_chain_id\": \"yominet-1\",\n  \"token_ids\": [\n    \"1\",\n    \"2\"\n  ],\n  \"collection_address\": \"0xabc...\",\n  \"class_id\": \"wasm.init1.../nft-transfer/channel-0/...\"\n}")

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

	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://router-api.initia.xyz/nft")
  .header("Content-Type", "application/json")
  .body("{\n  \"from_address\": \"init1abc...\",\n  \"from_chain_id\": \"echelon-1\",\n  \"to_address\": \"init1def...\",\n  \"to_chain_id\": \"yominet-1\",\n  \"token_ids\": [\n    \"1\",\n    \"2\"\n  ],\n  \"collection_address\": \"0xabc...\",\n  \"class_id\": \"wasm.init1.../nft-transfer/channel-0/...\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://router-api.initia.xyz/nft")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"from_address\": \"init1abc...\",\n  \"from_chain_id\": \"echelon-1\",\n  \"to_address\": \"init1def...\",\n  \"to_chain_id\": \"yominet-1\",\n  \"token_ids\": [\n    \"1\",\n    \"2\"\n  ],\n  \"collection_address\": \"0xabc...\",\n  \"class_id\": \"wasm.init1.../nft-transfer/channel-0/...\"\n}"

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

{
  "msgs": [
    {
      "typeUrl": "/ibc.applications.nft_transfer.v1.MsgTransfer",
      "value": {}
    }
  ]
}