curl --request POST \
  --url https://www.dench.com/api/v1/email/templates/{templateId}/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "firstName": "Ada",
    "company": "Lovelace Labs"
  }
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({data: {firstName: 'Ada', company: 'Lovelace Labs'}})
};

fetch('https://www.dench.com/api/v1/email/templates/{templateId}/preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://www.dench.com/api/v1/email/templates/{templateId}/preview"

payload = { "data": {
        "firstName": "Ada",
        "company": "Lovelace Labs"
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "subject": "Hi Ada",
  "htmlBody": "<p>Hi Ada, saw your work at Lovelace Labs.</p>",
  "variableNames": [
    "company",
    "firstName"
  ]
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}

{
  "error": {
    "message": "<string>",
    "type": "<string>",
    "code": "<string>",
    "details": "<unknown>"
  }
}