how to define the model with static key as well as dynamic key in typescript

export class person {
    [key: string]: CustomeObject;
    requestType: string;
    status: number;
}

need to create the model with a static key as well as the dynamic key in typescript. but getting the following error Property 'status' of type 'number' is not assignable to string index type 'OperationObject'

export class CustomeObject {
    Type: string;
    Percent: number;
    metadata: object;
    retrySequence: number;
    status: number;
}

how can I fix this here?