rtp_forwarders
rtp_forwarders: [{ publisher_id: number; rtp_forwarders: [{ audio_stream_id?: number; data_stream_id?: number; ip: string; port: number; pt?: number; rtcp_port?: number; srtp: boolean; ssrc?: string; substream?: string; video_stream_id?: number }] }]
unique numeric ID of the room