curl --request POST \
  --url https://api.x.com/2/chat/conversations/group \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "conversation_id": "<string>",
  "conversation_key_version": "<string>",
  "conversation_participant_keys": [
    {
      "encrypted_conversation_key": "<string>",
      "public_key_version": "<string>",
      "user_id": "<string>"
    }
  ],
  "group_members": [
    "<string>"
  ],
  "action_signatures": [
    {
      "encoded_message_event_detail": "<string>",
      "message_event_signature": {
        "message_signing_key_info_list": [
          {
            "member_id": "<string>",
            "public_key_version": "<string>",
            "signing_public_key": "<string>"
          }
        ],
        "public_key_version": "<string>",
        "signature": "<string>",
        "signature_version": "<string>",
        "signing_public_key": "<string>"
      },
      "message_id": "<string>",
      "signature_payload": "<string>"
    }
  ],
  "base64_encoded_key_rotation": "<string>",
  "group_admins": [
    "<string>"
  ],
  "group_avatar_url": "<string>",
  "group_description": "<string>",
  "group_name": "<string>",
  "ttl_msec": "<string>"
}
'

{
  "data": {
    "conversation_id": "<string>",
    "conversation_key_change_sequence_id": "<string>"
  },
  "errors": [
    {
      "title": "<string>",
      "type": "<string>",
      "detail": "<string>",
      "status": 123
    }
  ]
}