ResolveSipInboundRequest
constructor(@Json(name = "sip_caller_number") sipCallerNumber: String, @Json(name = "sip_trunk_number") sipTrunkNumber: String, @Json(name = "challenge") challenge: SIPChallenge, @Json(name = "routing_number") routingNumber: String? = null, @Json(name = "sip_headers") sipHeaders: Map<String, String>? = emptyMap())