igpapi — Instagram private API Simulator for Node.js (API reference) 4.14.0
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    Variable DirectRecipientPickerDataSchemaConst

    DirectRecipientPickerDataSchema: Struct<
        {
            recipients: $Array<
                Struct<{ full_name: String; pk: String; username: String }>,
            >;
            searchSessionId: String;
            threads: $Array<
                Struct<
                    {
                        is_group: Boolean;
                        muted: optionalKey<Boolean>;
                        preview: $Array<
                            Struct<
                                {
                                    client_context: optionalKey<String>;
                                    item_id: String;
                                    item_type: String;
                                    media: optionalKey<Union<readonly [(...), (...), (...)]>>;
                                    text: optionalKey<String>;
                                    timestamp: String;
                                    user_id: String;
                                },
                            >,
                        >;
                        thread_id: String;
                        thread_title: String;
                        thread_v2_id: optionalKey<String>;
                        users: $Array<
                            Struct<
                                {
                                    fbid_v2: optionalKey<String>;
                                    full_name: String;
                                    pk: String;
                                    username: String;
                                },
                            >,
                        >;
                    },
                >,
            >;
        },
    > = ...

    What the picker shows: the people and the conversations its last search answered, and the visit's search session (one per visit to the picker, the "Group chat" re-entry included; the 451 app reports it as the x-pigeon-session-id of every search request and as the session_id of the picker's search events).