Attempting to delete a post using the Blogger API returns a "not found" error

Sending a DELETE request to the Blogger REST API (v3.0), I am trying to delete a post using the delete method . For this, I use the following code:

api_uri = 'https://www.googleapis.com/blogger/v3/blogs/%s/posts/%s' % (blogId, postId)
result = urlfetch.fetch(url=api_uri,
                  method=urlfetch.DELETE,
                  headers={'Authorization' : oauth_token})

self.response.out.write(result.content)

But the server returns:

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "notFound",
    "message": "Not Found"
   }
  ],
  "code": 404,
  "message": "Not Found"
 }
}

However, I can get information about this message using the following code:

api_uri = 'https://www.googleapis.com/blogger/v3/blogs/%s/posts/%s' % (blogId, postId)
result = urlfetch.fetch(url=api_uri,
                  headers={'Authorization' : oauth_token})
self.response.out.write(result.content)

At the moment, I can’t understand what I’m doing wrong - the request is allowed blogIdand postIdtrue, but in any case, the server returns a "not found" error.

If you know how to solve this problem, or you can give useful advice - please help me.
Thank you for your time and attention to this matter.

UPD 1: If I send requests to the following URLs:

# https://www.googleapis.com/blogger/v3/users/{userID}
# https://www.googleapis.com/blogger/v3/users/self

:

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "notFound",
    "message": "Not Found"
   }
  ],
  "code": 404,
  "message": "Not Found"
 }
}

UPD 2: , OAuth 2.0 . , , https://accounts.google.com/o/oauth2/token JWT:

jwt_claim_set = {
   'iss' : '{id}@developer.gserviceaccount.com',
   'scope' : 'https://www.googleapis.com/auth/blogger',
   'aud' : 'https://accounts.google.com/o/oauth2/token',
   'exp' : expire,
   'iat' : timestamp
}

:

{
  "access_token" : "1/8xbJqaOZXSUZbHLl5EOtu1pxz3fmmetKx9W8CV4t79M",
  "token_type" : "Bearer",
  "expires_in" : 3600
}

oauth_token, :

data = simplejson.loads(result.content)
oauth_token = data['token_type'] + ' ' + data['access_token']