Template for web jason

Configuration
1

So I am trying to get the data from a web site https://helltides.com/api/schedule

When I look at the json I see that I want world boss and then 0 and then startTime. However, I can’t seem to get a template in HA to get the time. Here’s what I have which I know is wrong somehow. would anyone be able to help?

sensor:
  - platform: rest
    resource: https://helltides.com/api/schedule
    method: GET
    scan_interval: 360
    name: world_boss_time
    json_attributes_path: "{{ "$.world_boss['0']" }}"
      json_attributes: -startTime
2

I also tried

rest:
  - resource: https://helltides.com/api/schedule
    scan_interval: 360
    sensor:
      - name: "World Boss Time"
        value_template: "{{ value_json.["world_boss"]["0"]["startTime"] }}"
3 
- platform: rest
  name: World Boss Time
  resource: https://helltides.com/api/schedule
  method: GET
  value_template: >
    {{ value_json.world_boss[0].startTime }}
  scan_interval: 360