const axios = require('axios');
let data = JSON.stringify({
  "credential": "dXNlcjpwYXNzd29yZA=="
});

let config = {
  method: 'post',
  url: 'https://staging-api.taxo.ws/taxpayers',
  headers: { 
    'x-api-key': 'tu_api_key', 
    'Content-Type': 'application/json'
  },
  data : data
};

axios.request(config)
.then((response) => {
  console.log(JSON.stringify(response.data));
})
.catch((error) => {
  console.log(error);
});