Telemetry with Logstash

I'm trying to troubleshoot Telemetry Streaming to Logstash. The external Logstash seems to be rejecting. Is the following declaration sufficient?

{

   "class": "Telemetry",

   "My_System": {

       "class": "Telemetry_System",

       "systemPoller": {

           "interval": 60

       }

   },

   "My_Listener": {

       "class": "Telemetry_Listener",

       "port": 6514

   }, 

   "My_Consumer": {

       "class": "Telemetry_Consumer",

       "type": "Generic_HTTP",

       "host": "10.255.255.2",

       "protocol": "http",

       "port": 9609,

       "path": "/var/log/ts/f5-ts.log",

       "method": "POST",

       "headers": [

           {

               "name": "content-type",

               "value": "application/json"

           },

           {

               "name": "x-api-key",

               "value": "`>@/passphrase`"

           }

       ],

       "passphrase": {

           "cipherText": "apikey"

       }

   }

}