curl --request GET \
  --url 'https://api.hubapi.com/media-bridge/v1/{appId}/settings/object-definitions/{mediaType}?hapikey='

{
  "objectTypeId": "<string>",
  "objectTypeName": "<string>",
  "properties": [
    {
      "objectTypeId": "<string>",
      "property": {
        "allowedObjectTypes": [
          {
            "innerId": 123,
            "metaTypeId": 123
          }
        ],
        "calculated": true,
        "canArchive": true,
        "canRestore": true,
        "createdAt": 123,
        "createdUserId": 123,
        "currencyPropertyName": "<string>",
        "dataSensitivity": "high",
        "dateDisplayHint": "absolute",
        "deleted": true,
        "description": "<string>",
        "displayMode": "all_unique_versions",
        "displayOrder": 123,
        "enforceMultivalueUniqueness": true,
        "externalOptions": true,
        "externalOptionsReferenceType": "<string>",
        "favorited": true,
        "favoritedOrder": 123,
        "fieldType": "<string>",
        "formField": true,
        "fromUserId": 123,
        "groupName": "<string>",
        "hasUniqueValue": true,
        "hidden": false,
        "hubspotDefined": true,
        "isCustomizedDefault": true,
        "isMultiValued": true,
        "isPartial": true,
        "label": "<string>",
        "mutableDefinitionNotDeletable": true,
        "name": "<string>",
        "numberDisplayHint": "currency",
        "optionSortStrategy": "ALPHABETICAL",
        "options": [
          {
            "description": "<string>",
            "displayOrder": 123,
            "doubleData": 123,
            "hidden": true,
            "label": "<string>",
            "readOnly": true,
            "value": "<string>"
          }
        ],
        "optionsAreMutable": true,
        "owningAppId": 123,
        "portalId": 123,
        "readOnlyDefinition": true,
        "readOnlyValue": true,
        "referencedObjectType": "ABANDONED_CART",
        "searchTextAnalysisMode": "NONE",
        "searchableInGlobalSearch": true,
        "sensitiveDataCategories": [
          "<string>"
        ],
        "showCurrencySymbol": true,
        "textDisplayHint": "domain_name",
        "type": "bool",
        "updatedAt": 123
      },
      "calculationExpression": {
        "operator": "CONSTANT_BOOLEAN",
        "inputs": [
          {
            "operator": "CONSTANT_NUMBER",
            "inputs": "<array>",
            "propertyName": "<string>",
            "value": 123
          }
        ],
        "propertyName": "<string>",
        "value": true
      },
      "calculationFormula": "<string>",
      "definitionSource": {
        "type": "GLOBAL",
        "name": "<string>"
      },
      "extensionData": {
        "extensionStatusMap": {},
        "tags": [
          "<string>"
        ],
        "caseChangeTestExtensionData": {
          "mood": "<string>"
        },
        "optionDecoratorsExtensionData": {
          "optionDecoratorStyle": "<string>",
          "optionDecorators": {}
        },
        "requiredPropertiesExtensionData": {
          "isRequiredProperty": true
        },
        "softRequiredPropertiesExtensionData": {
          "isSoftRequiredProperty": true
        }
      },
      "externalOptionsMetaData": {
        "filter": {
          "includeUnconfirmedUsers": true,
          "pipelineIds": [
            "<string>"
          ]
        },
        "relatedObjectTypeId": "<string>"
      },
      "fulcrumPortalId": 123,
      "fulcrumTimestamp": 123,
      "janusGroup": "<string>",
      "permission": {
        "accessLevel": "<string>"
      },
      "propertyDefinitionSource": {
        "type": "<string>",
        "name": "<string>"
      },
      "propertyRequirements": {
        "gates": [
          "<string>"
        ],
        "operator": "AND",
        "scopeNames": [
          "<string>"
        ],
        "settings": [
          "<string>"
        ]
      },
      "rollupExpression": {
        "associationTypes": [
          {
            "associationCategory": "HUBSPOT_DEFINED",
            "associationTypeId": 123
          }
        ],
        "rollupOperator": "<string>",
        "sourceObjectTypeId": "<string>",
        "sourcePropertyName": "<string>",
        "conditionalExpression": {
          "operator": "CONSTANT_BOOLEAN",
          "inputs": [
            {
              "operator": "CONSTANT_NUMBER",
              "inputs": "<array>",
              "propertyName": "<string>",
              "value": 123
            }
          ],
          "propertyName": "<string>",
          "value": true
        },
        "conditionalFormula": "<string>",
        "emptyRollupValue": "<string>",
        "sourceCompareByPropertyName": "<string>"
      }
    }
  ],
  "propertyGroups": [
    {
      "displayName": "<string>",
      "displayOrder": 123,
      "fulcrumPortalId": 123,
      "fulcrumTimestamp": 123,
      "hubspotDefined": true,
      "name": "<string>"
    }
  ],
  "schema": {
    "allowsSensitiveProperties": true,
    "createDatePropertyName": "<string>",
    "defaultSearchPropertyNames": [
      "<string>"
    ],
    "deleted": true,
    "fullyQualifiedName": "<string>",
    "hasCustomProperties": true,
    "hasDefaultProperties": true,
    "hasExternalObjectIds": true,
    "hasOwners": true,
    "hasPipelines": true,
    "id": 123,
    "indexedForFiltersAndReports": true,
    "lastModifiedPropertyName": "<string>",
    "metaType": "CMS_HUBDB",
    "metaTypeId": 123,
    "name": "<string>",
    "objectTypeId": "<string>",
    "permissioningType": "<string>",
    "pipelinePropertyName": "<string>",
    "pipelineStagePropertyName": "<string>",
    "requiredProperties": [
      "<string>"
    ],
    "restorable": true,
    "scopeMappings": [
      {
        "accessLevel": "<string>",
        "requestAction": "<string>",
        "scopeName": "<string>"
      }
    ],
    "secondaryDisplayLabelPropertyNames": [
      "<string>"
    ],
    "accessScopeName": "<string>",
    "createdAt": 123,
    "description": "<string>",
    "integrationAppId": 123,
    "janusGroup": "<string>",
    "ownerPortalId": 123,
    "pipelineCloseDatePropertyName": "<string>",
    "pipelineTimeToClosePropertyName": "<string>",
    "pluralForm": "<string>",
    "primaryDisplayLabelPropertyName": "<string>",
    "readScopeName": "<string>",
    "singularForm": "<string>",
    "status": "<string>",
    "visibility": "<string>",
    "writeScopeName": "<string>"
  }
}