Sample PostData to add to a Type:Table object ..

Question

I am trying to develop an API interface to link two systems.  Specifically, I need to be able to QUERY a Table and Append to the table.   The Quesry works great and I get back the Table's definition and the data.

"https://services2.arcgis.com/Item_ID/ArcGIS/rest/services/Table_Name/FeatureServer/0/query?&token=....."

Postdata = "&f=json&objectIds=" . $featureId . "&outFields=Fielda,Fieldb,FID";

But, I am unable to find an example of what the JSON Postdata needs to be for the addFeatures Post.

"https://services2.arcgis.com/Item_ID/ArcGIS/rest/services/Table_Name/FeatureServer/0/addFeatures?"

By the way, the query gives me {Root}.features[0].attributes{"Field":data}

Any pointers to the right documentation or some samples would be appreciated.

TIA..

PS: The customer has specified that this is a PHP solution using curl and a Python solution.

JeffSilberberg · Accepted Answer

So I solved this -- My issue was that I was sending the data as a payload package and it needed to be submitted as a parameter on the URL string.