Create one or more Companies for your brokerage. Note that this takes an array of Companies even if only creating one.
name
POST /v9/companies
{ "companies": [ { "name": "The Leftorium" } ] }
{ "current_page": 1, "per_page": 100, "total_entries": 1, "companies": [ { "updated_at": "2017-12-19T19:33:25Z", "name": "The Leftorium", "id": 11228, "url": "/companies/11228" } ] }