curl --request GET \
  --url https://api.hubapi.com/automation/v4/actions/{appId}/{definitionId}/revisions

{
  "paging": {
    "next": {
      "link": "",
      "after": ""
    }
  },
  "results": [
    {
      "revisionId": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "definition": {
        "functions": [
          {
            "functionType": "PRE_ACTION_EXECUTION",
            "id": "<string>"
          }
        ],
        "actionUrl": "<string>",
        "published": true,
        "labels": {},
        "inputFields": [
          {
            "isRequired": true,
            "automationFieldType": "<string>",
            "typeDefinition": {
              "helpText": "<string>",
              "referencedObjectType": "CONTACT",
              "name": "<string>",
              "options": [
                {
                  "hidden": "<any>",
                  "displayOrder": "<any>",
                  "doubleData": "<any>",
                  "description": "<any>",
                  "readOnly": "<any>",
                  "label": "<any>",
                  "value": "<any>"
                }
              ],
              "description": "<string>",
              "externalOptionsReferenceType": "<string>",
              "label": "<string>",
              "type": "string",
              "fieldType": "booleancheckbox",
              "optionsUrl": "<string>",
              "externalOptions": true
            },
            "supportedValueTypes": [
              "STATIC_VALUE"
            ]
          }
        ],
        "outputFields": [
          {
            "typeDefinition": {
              "helpText": "<string>",
              "referencedObjectType": "CONTACT",
              "name": "<string>",
              "options": [
                {
                  "hidden": "<any>",
                  "displayOrder": "<any>",
                  "doubleData": "<any>",
                  "description": "<any>",
                  "readOnly": "<any>",
                  "label": "<any>",
                  "value": "<any>"
                }
              ],
              "description": "<string>",
              "externalOptionsReferenceType": "<string>",
              "label": "<string>",
              "type": "string",
              "fieldType": "booleancheckbox",
              "optionsUrl": "<string>",
              "externalOptions": true
            }
          }
        ],
        "revisionId": "<string>",
        "archivedAt": 123,
        "inputFieldDependencies": [
          {
            "dependencyType": "SINGLE_FIELD",
            "controllingFieldName": "<string>",
            "dependentFieldNames": [
              "<string>"
            ]
          }
        ],
        "executionRules": [
          {
            "labelName": "<string>",
            "conditions": {}
          }
        ],
        "id": "<string>",
        "objectTypes": [
          "<string>"
        ],
        "objectRequestOptions": {
          "properties": [
            "<string>"
          ]
        }
      },
      "id": "<string>"
    }
  ]
}