Power Automate Add new role definition using REST API

Question

I'm trying to create a create role definitions i.e. custom permission level using Power Automate with below body in Send an HTTP request to SharePoint:

{
    'request': { '__metadata': { 'type': 'SP.RoleDefinition' }, 'BasePermissions': 
    { '__metadata': { 'type': 'SP.BasePermissions' }, 'High': '176' , 'Low': '138612801' }, 
    'Description': 'New description', 'Name': 'New role', 'Order': 180 }
}

Below is error:

An entry without a type name was found, but no expected type was specified. To allow entries without type information, the expected type must also be specified when the model is specified.

Answer 1

In the Body, use the Json below:

{
'__metadata': { 'type': 'SP.RoleDefinition' },
  'BasePermissions': { '__metadata': { 'type': 'SP.BasePermissions' }, 'High': '176', 'Low': '138612801' },
  'Description': 'New Permission Level Description',
  'Name': 'New Permission Level',
  'Order': 180
}