# User Creation API

**Endpoint**: `POST /api/users/create`

**Description**: Create a new user or update existing user's tenant association.

**Example Request**:

```http
curl -X POST "https://api.tbns.io/functions/v1/api/users/create" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6Imh3a2htcWF2enphaWVvdmtvdHdiIiwicm9sZSI6ImFub24iLCJpYXQiOjE3NDMwMDA3NDAsImV4cCI6MjA1ODU3Njc0MH0.nKjMLLZ7cY92nchtE2mFtBCOMqb0WWbiqkekaMqVFMU" \
  -H "X-Token: X-TOKEN" \
  -d '{
    "email": "user@company.com",
    "first_name": "John",
    "last_name": "Doe"
  }'
```

**Required Fields**:

* `email`: User's email address

**Optional Fields**:

* `first_name`: User's first name
* `last_name`: User's last name