Creates a communications group

curl --request POST \
  --url https://api.rootly.com/v1/communications/groups \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '{
  "data": {
    "type": "communications-groups",
    "attributes": {
      "name": "<string>",
      "description": "<string>",
      "communication_type_id": "<string>",
      "is_private": true,
      "condition_type": "any",
      "sms_channel": true,
      "email_channel": true,
      "slack_channel_ids": [
        "<string>"
      ],
      "communication_group_conditions_attributes": [
        {
          "property_type": "service",
          "service_ids": [
            "<string>"
          ],
          "severity_ids": [
            "<string>"
          ],
          "functionality_ids": [
            "<string>"
          ],
          "group_ids": [
            "<string>"
          ],
          "incident_type_ids": [
            "<string>"
          ]
        }
      ],
      "communication_group_members_attributes": [
        {
          "user_id": 123
        }
      ],
      "communication_external_group_members_attributes": [
        {
          "name": "<string>",
          "email": "<string>",
          "phone_number": "<string>"
        }
      ]
    }
  }
}'

{
  "data": {
    "id": "9f4896c3-3990-484a-97ce-92101a1c4ab0",
    "type": "communications-groups",
    "attributes": {
      "name": "Engineering Team",
      "slug": "engineering-team",
      "description": "Engineering team communications group",
      "is_private": false,
      "condition_type": "any",
      "email_channel": true,
      "sms_channel": false,
      "communication_type_id": "ca09e9d0-5f3c-4971-8dc8-77555384c268",
      "slack_channel_ids": [
        "760ee423-372c-5db1-be7b-2fd10e10317b"
      ],
      "created_at": "2025-11-06T13:20:36.376-08:00",
      "updated_at": "2025-11-06T13:20:36.376-08:00",
      "team_id": 108,
      "communication_group_members": [
        {
          "id": "335776bd-99c8-4bf8-92b5-b4a27a887b8a",
          "user_id": 107,
          "name": "Monty Nikolaus",
          "email": "fredric.sporer@gislason.example"
        }
      ],
      "communication_external_group_members": [
        {
          "id": "f7bc614c-bc3c-48ff-9584-fa20f42ad968",
          "name": "External member",
          "email": "external@example.com",
          "phone_number": "+911234567890"
        }
      ],
      "communication_group_conditions": [
        {
          "id": "e97d5fa6-2ded-427b-a173-1737b2961ff0",
          "condition": "is",
          "property_type": "service",
          "properties": [
            {
              "id": "9dd88c4e-335e-421e-9684-d111c4247620",
              "name": "Autem possimus eligendi necessitatibus."
            }
          ]
        }
      ]
    }
  }
}