Created question in FIWARE Q/A platform on 11-01-2016 at 21:01
Please, ANSWER this question AT http://stackoverflow.com/questions/34730683/orion-json-bad-request

Question:
Orion JSON Bad Request

Description:
I'm currently trying to subscribe Orion and Cosmos. All data sent to Orion is being updated without any issue. But, when posting to http://xxx.xxx.xx.xx:1026/v1/subscribeContext I'm getting the following error:

{
"subscribeError": {
"errorCode":

}
}

This is the json string I'm sending:

{
"entities": [

],
"reference": "http://52.31.144.170:5050/notify",
"duration": "PT10S",
"notifyConditions": [

],
"attributes": [
"position"
]
}

The entity updating OK in Orion is:

{
"type": "Location",
"isPattern": "false",
"id": "Device-1",
"attributes": [
{
"name": "position",
"type": "coords",
"value": "24,21",
"metadatas": [

]
},

]
}

I've tried with many different examples from readthedocs, and other responses in StackOverflow unsuccessfully.

Which is the correct format? Should I call /subscribeContext before or after updating Orion with /contextEntities?

Orion Context Broker version is 0.26.1.

Thank you in advance.