curl --request POST \
  --url https://api.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "contas": [
    {
      "id": 123,
      "valor": 123,
      "juros": 123,
      "desconto": 123,
      "acrescimo": 123,
      "taxa": 123,
      "categoria": {
        "id": 123
      }
    }
  ],
  "contato": {
    "id": 123
  },
  "historico": "<string>",
  "categoria": {
    "id": 123
  }
}
'

import requests

url = "https://api.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta"

payload = {
    "contas": [
        {
            "id": 123,
            "valor": 123,
            "juros": 123,
            "desconto": 123,
            "acrescimo": 123,
            "taxa": 123,
            "categoria": { "id": 123 }
        }
    ],
    "contato": { "id": 123 },
    "historico": "<string>",
    "categoria": { "id": 123 }
}
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({
    contas: [
      {
        id: 123,
        valor: 123,
        juros: 123,
        desconto: 123,
        acrescimo: 123,
        taxa: 123,
        categoria: {id: 123}
      }
    ],
    contato: {id: 123},
    historico: '<string>',
    categoria: {id: 123}
  })
};

fetch('https://api.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta', 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.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta",
  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([
    'contas' => [
        [
                'id' => 123,
                'valor' => 123,
                'juros' => 123,
                'desconto' => 123,
                'acrescimo' => 123,
                'taxa' => 123,
                'categoria' => [
                                'id' => 123
                ]
        ]
    ],
    'contato' => [
        'id' => 123
    ],
    'historico' => '<string>',
    'categoria' => [
        'id' => 123
    ]
  ]),
  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.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta"

	payload := strings.NewReader("{\n  \"contas\": [\n    {\n      \"id\": 123,\n      \"valor\": 123,\n      \"juros\": 123,\n      \"desconto\": 123,\n      \"acrescimo\": 123,\n      \"taxa\": 123,\n      \"categoria\": {\n        \"id\": 123\n      }\n    }\n  ],\n  \"contato\": {\n    \"id\": 123\n  },\n  \"historico\": \"<string>\",\n  \"categoria\": {\n    \"id\": 123\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.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"contas\": [\n    {\n      \"id\": 123,\n      \"valor\": 123,\n      \"juros\": 123,\n      \"desconto\": 123,\n      \"acrescimo\": 123,\n      \"taxa\": 123,\n      \"categoria\": {\n        \"id\": 123\n      }\n    }\n  ],\n  \"contato\": {\n    \"id\": 123\n  },\n  \"historico\": \"<string>\",\n  \"categoria\": {\n    \"id\": 123\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.tiny.com.br/public-api/v3/extratos-bancarios/{idExtratoBancario}/movimentacoes/{idMovimentacao}/vinculo-conta")

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  \"contas\": [\n    {\n      \"id\": 123,\n      \"valor\": 123,\n      \"juros\": 123,\n      \"desconto\": 123,\n      \"acrescimo\": 123,\n      \"taxa\": 123,\n      \"categoria\": {\n        \"id\": 123\n      }\n    }\n  ],\n  \"contato\": {\n    \"id\": 123\n  },\n  \"historico\": \"<string>\",\n  \"categoria\": {\n    \"id\": 123\n  }\n}"

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

{
  "situacao": 0,
  "bordero": {
    "id": 123
  }
}

{
  "mensagem": "Ocorreram erros de validação",
  "detalhes": [
    {
      "campo": "codigo",
      "mensagem": "O campo código é obrigatório"
    }
  ]
}