curl --request POST \
  --url https://api.melso.ai/v1/companies/{company_id}/cases/{case_id}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "content": "<string>",
  "file_ids": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ],
  "changes": false
}
'

import requests

url = "https://api.melso.ai/v1/companies/{company_id}/cases/{case_id}/messages"

payload = {
    "content": "<string>",
    "file_ids": ["3c90c3cc-0d44-4b50-8888-8dd25736052a"],
    "changes": False
}
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({
    content: '<string>',
    file_ids: ['3c90c3cc-0d44-4b50-8888-8dd25736052a'],
    changes: false
  })
};

fetch('https://api.melso.ai/v1/companies/{company_id}/cases/{case_id}/messages', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "kind": "modelo",
  "status": "draft",
  "created_at": "2023-11-07T05:31:56Z",
  "deadline": "2023-12-25",
  "current_version": 123,
  "approved_version": 123,
  "payment_url": "<string>",
  "information_request": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "items": [
      {
        "id": "<string>",
        "kind": "document",
        "label": "<string>"
      }
    ]
  },
  "messages": [
    {
      "author": "company",
      "content": "<string>",
      "created_at": "2023-11-07T05:31:56Z"
    }
  ],
  "documents": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "filename": "<string>",
      "content_type": "<string>",
      "size_bytes": 123,
      "url": "<string>"
    }
  ],
  "external_reference": "<string>",
  "completed_on": "2023-12-25",
  "updated_at": "2023-11-07T05:31:56Z"
}

{
  "error": "invalid token",
  "code": "unauthorized",
  "request_id": "req_01JAB3K9X2"
}

{
  "error": "invoice not found",
  "code": "not_found",
  "request_id": "req_01JAB3K9X2"
}

{
  "error": "The tax return changed or is not ready for approval",
  "code": "version_conflict",
  "request_id": "req_01JAB3K9X2"
}