curl --request POST \
  --url https://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "marketId": "NC26-BIN-83479265",
  "amount": "30",
  "outcomeIndex": 127
}
'

import requests

url = "https://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature"

payload = {
    "marketId": "NC26-BIN-83479265",
    "amount": "30",
    "outcomeIndex": 127
}
headers = {
    "X-Api-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({marketId: 'NC26-BIN-83479265', amount: '30', outcomeIndex: 127})
};

fetch('https://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature', 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://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature",
  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([
    'marketId' => 'NC26-BIN-83479265',
    'amount' => '30',
    'outcomeIndex' => 127
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Api-Key: <api-key>"
  ],
]);

$response = curl_exec($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://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature"

	payload := strings.NewReader("{\n  \"marketId\": \"NC26-BIN-83479265\",\n  \"amount\": \"30\",\n  \"outcomeIndex\": 127\n}")

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

	req.Header.Add("X-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))

}

HttpResponse<String> response = Unirest.post("https://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature")
  .header("X-Api-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"marketId\": \"NC26-BIN-83479265\",\n  \"amount\": \"30\",\n  \"outcomeIndex\": 127\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://core.api.dev.predictstreet.sde.adifoundation.ai/api/vault/merge-signature")

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

request = Net::HTTP::Post.new(url)
request["X-Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"marketId\": \"NC26-BIN-83479265\",\n  \"amount\": \"30\",\n  \"outcomeIndex\": 127\n}"

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

{
  "signedOpId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "digest": "<string>",
  "kind": 123,
  "collateralToken": "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb3",
  "conditionId": "<string>",
  "partition": [
    "1",
    "2"
  ],
  "salt": "<string>",
  "deadline": 123,
  "vaultAddress": "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb3",
  "backendSig": "<string>",
  "amount": "<string>",
  "outcomeIndex": 123
}

{
  "status": 400,
  "error": {
    "code": "bad_request",
    "message": "<string>",
    "trace_id": "<string>",
    "retryAfterSec": 123,
    "retryable": true,
    "details": {}
  }
}