curl -X GET "https://api.usegately.com/api/v1/members/mem_abc123" \
  -H "Authorization: Bearer YOUR_API_KEY"

{
  "success": true,
  "data": {
    "id": "mem_abc123",
    "email": "john@example.com",
    "full_name": "John Doe",
    "avatar_url": "https://example.com/avatar.jpg",
    "status": "active",
    "plan_id": "plan_pro",
    "plan": {
      "id": "plan_pro",
      "name": "Pro Plan",
      "price": 29
    },
    "metadata": {
      "company": "Acme Inc",
      "role": "developer"
    },
    "last_login_at": "2024-01-20T14:30:00Z",
    "created_at": "2024-01-15T10:30:00Z",
    "updated_at": "2024-01-20T14:30:00Z"
  }
}