curl --request GET \
  --url https://restapi.sign.plus/v2/envelope/{envelope_id}/annotations \
  --header 'Authorization: Bearer <token>'

[
  {
    "id": "<string>",
    "recipient_id": "<string>",
    "document_id": "<string>",
    "page": 123,
    "x": 123,
    "y": 123,
    "width": 123,
    "height": 123,
    "required": true,
    "type": "TEXT",
    "signature": {
      "id": "<string>"
    },
    "initials": {
      "id": "<string>"
    },
    "text": {
      "size": 123,
      "color": 123,
      "value": "<string>",
      "tooltip": "<string>",
      "dynamic_field_name": "<string>",
      "font": {
        "family": "UNKNOWN",
        "italic": true,
        "bold": true
      }
    },
    "datetime": {
      "size": 123,
      "font": {
        "family": "UNKNOWN",
        "italic": true,
        "bold": true
      },
      "color": "<string>",
      "auto_fill": true,
      "timezone": "<string>",
      "timestamp": 123,
      "format": "DMY_NUMERIC_SLASH"
    },
    "checkbox": {
      "checked": true,
      "style": "CIRCLE_CHECK"
    }
  }
]