Get fields for a custom object

curl --request GET \
  --url https://platform.thena.ai/v1/custom-object/{customObjectId}/fields \
  --header 'x-api-key: <api-key>'

{
  "data": [
    {
      "id": "<string>",
      "relationshipType": "<string>",
      "childObjectId": "<string>",
      "childEntityId": "<string>",
      "defaultValue": "<string>",
      "createdOn": "2023-11-07T05:31:56Z",
      "updatedOn": "2023-11-07T05:31:56Z"
    }
  ],
  "status": true,
  "message": "<string>",
  "timestamp": "2023-11-07T05:31:56Z"
}