Convert terraform variables to equivalent bicep variable/param

How to represent/convert below terraform variables to equivalent azure bicep variable/param.

I'm new to bicep coding. Could anyone help over here with this small query?

variable "policy_templates" {
  type = object({
    composition_path     = string
    composition_defaults = any
    inbound = object({
      set_backend            = any
      platform_authorization = any
    })
  })
}

variable "apim_backends" {
  type = object({
    fn_car = map(any)
  })
}