mutation UpdateEstimatorAvailabilityExtension($input: UpdateEstimatorAvailabilityExtensionInput!) {
  updateEstimatorAvailabilityExtension(input: $input) {
    value
    unit
    message
    entryId
  }
}

{
  "input": {
    "extensionId": "id",
    "date": "value",
    "startTime": "value",
    "endTime": "value"
  }
}

{
  "data": {
    "updateEstimatorAvailabilityExtension": {
      "value": 1,
      "unit": "string",
      "message": "string",
      "entryId": "string"
    }
  }
}