Add Tag to Shipment

{
  "type": "object",
  "description": "A shipment add tag response body",
  "required": [
    "shipment_id",
    "tag"
  ],
  "properties": {
    "shipment_id": {
      "description": "A string that uniquely identifies the shipment",
      "type": "object"
    },
    "tag": {
      "description": "The tag that is now associated with this shipment",
      "type": "object"
    }
  },
  "additionalProperties": false
}