How convert the output of "ps" and "head" to JSON with key "{#PROCNAME}"?

I'm trying to get a JSON document with the top 5 processes by memory. This JSON I want to send to Zabbix and draw the top 5 processes by memory. I get the top 5 processes by memory by the following command: ps axho comm --sort -rss | head -5 node mongod kubelet dockerd systemd-journal How to convert the output of ps+head to JSON with key {#PROCNAME} to get this structure:

{
  "data": [
    {
      "{#PROCNAME}": "node"
    },
    {
      "{#PROCNAME}": "mongod"
    },
    {
      "{#PROCNAME}": "kubelet"
    },
    {
      "{#PROCNAME}": "dockerd"
    },
    {
      "{#PROCNAME}": "systemd-journal"
    }
  ]
}

https://www.zabbix.com/documentation/current/manual/config/macros/lld_macros There is a type of macro used within the low-level discovery (LLD) function: {#MACRO}