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我正在尝试通过 OpenApi 规范在 Power Automate 中创建一个 webhook 触发器。webhook url 必须在正文中并且它是必需的，但我也希望在正文中具有动态属性。到目前为止，我有这个：

"/webhook/triggers/{entityType}": {
      "x-ms-notification-content": {
        "description": "When a operation is performed on a entity",
        "x-ms-summary": "When a operation is performed on a entity",
        "schema": {
          "type": "object",
          "properties": {
            "data": {
              "type": "object",
              "x-ms-dynamic-schema": {
                "operationId": "GetDynamicSchema",
                "parameters": {
                  "entityType": {
                    "parameter": "entityType"
                  }
                }
              }
            },
            "id": {
              "type": "string"
            },
            "source": {
              "type": "string"
            },
            "type": {
              "type": "string"
            },
            "time": {
              "format": "date-time",
              "type": "string"
            },
            "dataSchema": {
              "type": "string"
            },
            "dataContentType": {
              "type": "string"
            },
            "extensionAttributes": {
              "type": "object",
              "additionalProperties": {
                "type": "object"
              }
            }
          }
        }
      },
      "post": {
        "description": "When a operation is performed on a entity",
        "x-ms-trigger": "single",
        "x-ms-visibility": "important",
        "summary": "When a operation is performed on a entity",
        "operationId": "RegisterTriggerWithEntity",
        "consumes": ["application/json"],
        "produces": ["application/json"],
        "parameters": [
          {
            "name": "entityType",
            "x-ms-summary": "Entity",
            "description": "The entity",
            "x-ms-url-encoding": "single",
            "in": "path",
            "required": true,
            "type": "string",
            "x-ms-dynamic-values": {
              "operationId": "GetEntityTypes",
              "value-path": "name",
              "value-title": "description"
            }
          },
          {
            "name": "body",
            "in": "body",
            "required": true,
            "schema": {
              "type": "object",
              "properties": {
                "webhookUrl": {
                  "type": "string",
                  "x-ms-notification-url": true,
                  "x-ms-visibility": "internal"
                },
                "data": {
                  "type": "object",
                  "x-ms-dynamic-schema": {
                    "operationId": "GetSchema",
                    "parameters": {
                      "entityType": {
                        "parameter": "entityType"
                      }
                    }
                  },
                  "x-ms-dynamic-properties": {
                    "operationId": "GetSchema",
                    "parameters": {
                      "entityType": {
                        "parameterReference": "entityType"
                      }
                    }
                  }
                }
              },
              "required": [
                "webhookUrl"
              ],
              "x-ms-visibility": "important"
            }
          }
        ],
        "responses": {
          "201": {
            "description": "Created"
          },
          "401": {
            "description": "Unauthorized"
          },
          "403": {
            "description": "Forbidden"
          }
        }
      }
    }

通过验证，我还在 UI 中提示了架构属性，准备好由用户提供，但是在保存流程时，我得到以下信息OpenApiOperationParameterValidationFailed：

Flow save failed with code 'OpenApiOperationParameterValidationFailed' and message 'Input parameter 'body' validation failed in workflow operation 'When_a_operation_is_performed_on_a_entity': The API operation 'RegisterTriggerWithEntity' requires the property 'body/data' to be set to one of its defined enum values '[]' but is set to '{ "firstProperty": "testValue" }'.'.

这个流程可能有什么问题？具有动态架构属性的 webhook 触发器的建议方法是什么？

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