Does not work LLD if the agent works through zabbix-proxy (Error: value should be a JSON object), but if the agent works through a server, everything works fine.
As a test we made a static item of type TEXT.
The result of his work:
Proxy:

{

"data":[

{

"{#G}":"company",

"{#F}":"OS_ISO",

"{#S}":"ServerName",

"{#R}":"KEY"

Server:

{

"data":[

{

"{#G}":"company",

"{#F}":"OS_ISO",

"{#S}":"ServerName",

"{#R}":"KEY"

}

]

}