"message": "invalid object specification: type should not be an empty string", "traceID": ""

I am trying to create a contact point in grafana using grafana API.

Tried with the help of these URLS: AlertProvisioning HTTP_API API call

Getting error message as “message”: “invalid object specification: type should not be an empty string”, “traceID”: “”

Payload:
{
“apiVersion”: 1,
“contactPoints”: [
{
“orgId”: 1,
“name”: “contactpoint_name”,
“receivers”: [
{
“uid”: “ac086fda-ce4e-4f67-a345-3cd9531rf111”,
“type”: “email”,
“settings”: {
“addresses”: “email_address”,
“message”: “Hello”,
“singleEmail”: false,
“subject”: "Test Alert "
},
“disableResolveMessage”: false
}
]
}
]
}