curl --request POST \
  --url https://api.tamtam.ai/api/v2/key-accounts \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "company_linkedin_ids": [
    "<string>"
  ],
  "user_email": "jsmith@example.com",
  "tags": [
    "<string>"
  ],
  "tier_level": 2
}
'

{
  "already_in_key_accounts_linkedin_ids": [
    "<string>"
  ],
  "ignored_company_linkedin_ids": [
    "<string>"
  ],
  "newly_added_company_linkedin_ids": [
    "<string>"
  ],
  "payment_required": true,
  "tags": [
    "<string>"
  ],
  "tier_level": 123
}