curl --request POST \
  --url https://fulfillment.noyo.com/api/v1/group_connections \
  --header 'Content-Type: application/json' \
  --data '{
  "carrier_id": "8fac0992-933a-4743-8dab-0d606ef2569e",
  "federal_ein": "123456789",
  "group_data": {
    "carrier_group_id": "10000000",
    "group_name": "Test Company"
  }
}'

{
  "carrier_id": "8fac0992-933a-4743-8dab-0d606ef2569e",
  "created": 1557329939,
  "group_data": {
    "carrier_group_id": "10000000",
    "group_name": "Test Company"
  },
  "group_id": "47c07963-2e34-4da2-86b4-cbc3c57111c1",
  "id": "dd9a1813-34f7-4c7e-86bc-f041f2cbd9a1",
  "modified": 1557329939,
  "organization_id": "d61fa455-adf4-4dc4-8c57-6d779ba9475e",
  "request_type": "initial",
  "status": "created",
  "version": "9906b5d2-e76d-4bad-ba4c-8ce90b6b867b"
}