There is more than JSON there and the JSON is quite complex. Here is the JSON part.
{"statusInfo":{"status":"ONLINE","statusDetail":"NONE"},"editable":true,"label":"temperatures_heizung","bridgeUID":"km200:kmdevice:9572","configuration":{},"properties":{"root":"#system#sensors#temperatures"},"UID":"km200:sensor:9572:temperatures","thingTypeUID":"km200:sensor","channels":[{"linkedItems":["T_Aussen_Hz","km200_sensor_9572_temperatures_outdoor_t1"],"uid":"km200:sensor:9572:temperatures:outdoor_t1","id":"outdoor_t1","channelTypeUID":"km200:sensor:9572:temperatures:outdoor_t1","itemType":"Number","kind":"STATE","label":"outdoor_t1","description":"outdoor_t1","defaultTags":[],"properties":{"root":"#system#sensors#temperatures#outdoor_t1"},"configuration":{}},{"linkedItems":["km200_sensor_9572_temperatures_chimney"],"uid":"km200:sensor:9572:temperatures:chimney","id":"chimney","channelTypeUID":"km200:sensor:9572:temperatures:chimney","itemType":"Number","kind":"STATE","label":"chimney","description":"chimney","defaultTags":[],"properties":{"root":"#system#sensors#temperatures#chimney"},"configuration":{}},{"linkedItems":["km200_sensor_9572_temperatures_supply_t1_setpoint"],"uid":"km200:sensor:9572:temperatures:supply_t1_setpoint","id":"supply_t1_setpoint","channelTypeUID":"km200:sensor:9572:temperatures:supply_t1_setpoint","itemType":"Number","kind":"STATE","label":"supply_t1_setpoint","description":"supply_t1_setpoint","defaultTags":[],"properties":{"root":"#system#sensors#temperatures#supply_t1_setpoint"},"configuration":{}},{"linkedItems":["km200_sensor_9572_temperatures_supply_t1"],"uid":"km200:sensor:9572:temperatures:supply_t1","id":"supply_t1","channelTypeUID":"km200:sensor:9572:temperatures:supply_t1","itemType":"Number","kind":"STATE","label":"supply_t1","description":"supply_t1","defaultTags":[],"properties":{"root":"#system#sensors#temperatures#supply_t1"},"configuration":{}},{"linkedItems":["T_Warmwasser","km200_sensor_9572_temperatures_hotWater_t1"],"uid":"km200:sensor:9572:temperatures:hotWater_t1","id":"hotWater_t1","channelTypeUID":"km200:sensor:9572:temperatures:hotWater_t1","itemType":"Number","kind":"STATE","label":"hotWater_t1","description":"hotWater_t1","defaultTags":[],"properties":{"root":"#system#sensors#temperatures#hotWater_t1"},"configuration":{}},{"linkedItems":["km200_sensor_9572_temperatures_switch"],"uid":"km200:sensor:9572:temperatures:switch","id":"switch","channelTypeUID":"km200:sensor:9572:temperatures:switch","itemType":"Number","kind":"STATE","label":"switch","description":"switch","defaultTags":[],"properties":{"root":"#system#sensors#temperatures#switch"},"configuration":{}}]}
You can parse it out by pasting into a site like https://jsonlint.com/
Using the cli cURL is much easier. I set my command in the variable $cmd
$curlJSON = array(json_decode(exec($cmd), TRUE));
puts the JSON into $curlJSON
array to be parsed further.