How to access rest-api of a photovoltaic system (documented)?

Configuration
23

Now it works for me with the following code. @HycDev : thanks for your help!

#Hycube configuration

sensor:
  - platform: command_line
    name: Hycube Token
    scan_interval: 36000
    command: >-
	 curl --request GET 'http://your_ip/auth/' --header 'Authorization: QmFzaWMgaHljdWJlOmh5Y3ViZQ=='
  - platform: rest
    scan_interval: 5
    headers:
      Authorization : "{{ states('sensor.hycube_token') }}"
      Accept: application/vnd.github.v3+json
      Content-Type: application/json
      User-Agent: Home Assistant REST sensor
    resource: http://your_ip/get_values/
    value_template: Bla
    name: Hycube Data
    json_attributes:
          - Battery_C
          - Battery_I
          - Battery_P
          - Battery_V
          - Grid_f
          - Grid_P
          - Grid_V
          - Home_P
          - Inv 1_I
          - Inv 1_P
          - Inv 1_V
          - Solar 1_P
          - Solar 1_I
          - Solar 1_V
          - solar 2_P
          - solar 2_I
          - solar 2_V
          - solar_total_P
  - platform: template
    sensors:
      battery_capacity:
        value_template: "{{ state_attr('sensor.hycube_data', 'Battery_C') }}"
        device_class: battery