Receiving a JSON array from RestFull and capturing a specific value

Configuration
1

I need some help! I have the following array: https://gist.github.com/guilhermelirio/2fc6d2f0ce5e08489c3b2728091916ff

I created a Restfull sensor to know the temperature of my video card, but the value always shows unavailable.

sensor.yaml:

- platform: rest
  name: pc_sensors
  resource: http://192.168.6.53:10445/metrics/json
  json_attributes:
   - unit
   - sensor_type
   - sensor
   - source
   - value
   - valueType
   - entity
   - metricName
   - metric
  value_template: '{{ value_json }}'
- platform: template
  sensors:
    rtx_2080_temp:
      friendly_name: 'RTX AORUS 2080 Temp'
      value_template: '{{ states.sensor.pc_sensors[45].attributes["value"] }}'      
      unit_of_measurement: '°C'
      device_class: temperature

How do I get to capture exactly the temperature value of the video card?

Obs: sorry for my english!