Retrieve an Invoice Timeline message

{
  "type": "object",
  "properties": {
    "_links": {
      "type": "array",
      "description": "The links related to resource.",
      "items": {
        "type": "object",
        "required": [
          "rel"
        ],
        "properties": {
          "rel": {
            "type": "string",
            "description": "The link type.",
            "enum": [
              "self"
            ]
          }
        }
      }
    },
    "extraData": {
      "type": "object",
      "description": "Additional data.",
      "properties": {
        "actions": {
          "type": "array",
          "description": "Actions available to a Timeline message. Can be empty in case no actions are available for a message.",
          "items": {
            "type": "object",
            "properties": {
              "action": {
                "type": "string",
                "enum": [
                  "resend-email",
                  "redemption-cancel",
                  "ruleset-restore"
                ]
              }
            }
          }
        },
        "author": {
          "type": "object",
          "description": "Timeline comment author data.",
          "properties": {
            "userFullName": {
              "type": "string"
            },
            "userId": {
              "type": "string"
            }
          }
        },
        "links": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "placeholder": {
                "type": "string"
              },
              "resourceId": {
                "type": "string",
                "description": "The resource ID. Defaults to UUID v4."
              },
              "resourceType": {
                "type": "string",
                "enum": [
                  "kyc-document",
                  "invoice",
                  "subscription",
                  "transaction",
                  "email-message",
                  "dispute",
                  "coupon"
                ]
              }
            }
          }
        },
        "mentions": {
          "type": "object"
        },
        "tables": {
          "type": "array",
          "items": {
            "type": "object",
            "description": "Additional information about Timeline message.",
            "properties": {
              "footer": {
                "type": "string",
                "description": "Data table footer."
              },
              "title": {
                "type": "string",
                "description": "Data table title."
              },
              "type": {
                "type": "string",
                "enum": [
                  "list",
                  "one-columns",
                  "two-columns",
                  "three-columns"
                ]
              }
            }
          }
        }
      }
    },
    "id": {
      "description": "The Timeline message identifier string.",
      "type": "object"
    },
    "message": {
      "type": "string",
      "description": "The message that describes the message details."
    },
    "occurredTime": {
      "description": "Timeline message time.",
      "type": "object"
    },
    "triggeredBy": {
      "type": "string",
      "description": "Shows who or what triggered the Timeline event.",
      "enum": [
        "rebilly",
        "app",
        "direct-api"
      ]
    },
    "type": {
      "type": "string",
      "description": "Timeline message type.",
      "enum": [
        "timeline-comment-created",
        "invoice-created",
        "invoice-issued",
        "invoice-abandoned",
        "invoice-voided",
        "invoice-past-due",
        "invoice-paid",
        "invoice-partially-paid",
        "invoice-disputed",
        "invoice-refunded",
        "invoice-partially-refunded",
        "invoice-renewal-payment-declined",
        "email-message-sent",
        "coupon-applied",
        "transaction-approved",
        "transaction-abandoned",
        "transaction-canceled",
        "transaction-declined",
        "transaction-initiated",
        "transaction-refunded",
        "transaction-voided"
      ]
    }
  }
}