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": "2251a3b4-3c60-498b-9d18-980d6d0d4004",
    "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": "0a866b70-9fa9-4c70-b8f2-7513415a36b6",
      "slack_channel_ids": [
        "f42d3cd3-435e-5530-8f78-a75cbb617eee"
      ],
      "created_at": "2025-09-26T17:24:17.407-07:00",
      "updated_at": "2025-09-26T17:24:17.407-07:00",
      "team_id": 65,
      "communication_group_members": [
        {
          "id": "b699e005-7319-4d08-bca4-878f94159035",
          "user_id": 80,
          "name": "Clemente Ferry",
          "email": "merrie_thiel@kihn-reichel.example"
        }
      ],
      "communication_external_group_members": [
        {
          "id": "f9561184-8943-4bf8-9f04-244d1e24a098",
          "name": "External member",
          "email": "external@example.com",
          "phone_number": "+911234567890"
        }
      ],
      "communication_group_conditions": [
        {
          "id": "b6336e14-72ce-4f95-9717-c2478328a1f0",
          "condition": "is",
          "property_type": "service",
          "properties": [
            {
              "id": "f23a1ce1-1f4d-4fc1-ba56-43457ffd919b",
              "name": "Assumenda ipsa qui vel."
            }
          ]
        }
      ]
    }
  }
}