MQL Entity Format
The new Entity format, also known as the MQL Entity Format, is based on the SELECT list of an MQL query. The new Entity format contains a single "attributes" property which consists of the attribute type names that appear in the "select" property. For MQL SELECT list details, refer to Metadata Query Language (MQL). 
Following is a sample Entity object in the MQL Entity Format which corresponds to the SELECT list: Name, "Object Type", "Object Id": 
{
"attributes": [
{
"attributeType": {
"name": "Name",
"displayName": "Name",
"type": "SYSTEM_ATTRIBUTE"
},
"value": "PurchaseOrder"
},
{
"attributeType": {
"name": "\"Object Type\"",
"displayName": "Object Type",
"type": "SYSTEM_ATTRIBUTE"
},
"value": "Table"
},
{
"attributeType": {
"name": "\"Object Id\"",
"displayName": "Object Id",
"type": "SYSTEM_ATTRIBUTE"
},
"value": "69585_200"
}
]
}
Every legacy Entity property can be mapped to an MM system attribute. Here is the mapping between the legacy Entity properties and MM system attributes.
Legacy Entity Property  | MM System Attribute  | 
id  | "Object Id"  | 
name  | Name  | 
objectType  | "Object Type"  | 
labels  | Labels  | 
parentId  | Context  | 
term  | "Term Classification"  | 
semanticTypes  | "Data Classifications"  |