# params: AV w/o piece (destroy)
{
  "utf8"=>"✓",
  "_method"=>"patch",
  "mode"=>"cal",
  "start_date"=>"2021-08-17",
  "ovrd"=>"0",
  "dr"=>"0",
  "volunteers_availability"=>{
    "is_approved"=>"true",
    "approved_by_id"=>"5",
    "admin_reject_reason"=>"",
    "tenant_availability_type_id"=>"1",
    "whole_day"=>"1",
    "starts_at"=>"2021-08-17",
    "start_time"=>"00:00",
    "ends_at"=>"2021-08-17",
    "end_time"=>"00:00",
    "split_and_keep_old_entry"=>"",
    "remark_by_collaborator"=>"",
    "evidence_entries_attributes"=>{
      "0"=>{
        "file_cache"=>"",
        "remove_file"=>"",
        "_destroy"=>"1",
        "id"=>"9"}
      }
    },
  "presenter_for_volunteers_availability"=>{"starts_at"=>"17/08/2021",
    "start_time"=>"00:00",
    "ends_at"=>"17/08/2021",
    "end_time"=>"00:00"},
  "controller"=>"admin/volunteers/availabilities",
  "action"=>"update",
  "locale"=>"en",
  "volunteer_id"=>"2",
  "id"=>"7"
}