Get the result of a purge request

Query the pipeline executions of a source. The fields that can be used to filter or sort pipeline executions are: - `id`: The pipeline execution id. - `pipelineDefinitionId`: The pipeline definition id. - `createdAt`: The pipeline execution creation timestamp. - `updatedAt`: The pipeline execution last update timestamp. - `status`: The pipeline execution status. - `operation.action`: The action of the operation that triggered the pipeline execution. - `operation.taskId`: The id of the task that triggered the pipeline execution. - `operation.target.targetType`: The type of the target that triggered the pipeline execution. It can be 'RESOURCE' or 'RELATIONSHIP'. - `operation.target.type`: The type of the resource or relationship that triggered the pipeline execution. - `operation.target.id`: The id of the resource or relationship that triggered the pipeline execution. - `reviewAssignment.reviewerId`: The id of the reviewer assigned to review the operation that triggered the pipeline execution, if any. Note: this field is only available as a filter, not as a sort field. It also only supports the equality operator.