curl --request POST \
  --url https://api.headlesscommerce.io/v1/admin/organization/members \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "jsmith@example.com"
}
'

{
  "id": "<string>",
  "email": "jsmith@example.com",
  "name": "<string>",
  "joined_at": "2023-11-07T05:31:56Z"
}