Signs a blob using the system-managed private key for a  ServiceAccount 
 
.
HTTP request
 POST https://iam.googleapis.com/v1/{name=projects/*/serviceAccounts/*}:signBlob 
The URL uses gRPC Transcoding syntax.
Path parameters
name
 (deprecated) 
 
 string 
Required. Deprecated. Migrate to Service Account Credentials API .
The resource name of the service account.
Use one of the following formats:
-  projects/{PROJECT_ID}/serviceAccounts/{EMAIL_ADDRESS}
-  projects/{PROJECT_ID}/serviceAccounts/{UNIQUE_ID}
As an alternative, you can use the - 
wildcard character instead of the project ID:
-  projects/-/serviceAccounts/{EMAIL_ADDRESS}
-  projects/-/serviceAccounts/{UNIQUE_ID}
When possible, avoid using the - 
wildcard character, because it can cause response messages to contain misleading error codes. For example, if you try to access the service account projects/-/serviceAccounts/fake@example.com 
, which does not exist, the response contains an HTTP 403 Forbidden 
error instead of a 404 Not
                  Found 
error.
Authorization requires the following IAM 
permission on the specified resource name 
:
-  iam.serviceAccounts.signBlob
Request body
The request body contains data with the following structure:
| JSON representation | 
|---|
| { "bytesToSign" : string } | 
| Fields | |
|---|---|
| bytesToSign |   Required. Deprecated. Migrate to Service Account Credentials API . The bytes to sign. A base64-encoded string. | 
Response body
Deprecated. Migrate to Service Account Credentials API .
The service account sign blob response.
If successful, the response body contains data with the following structure:
| JSON representation | 
|---|
| { "keyId" : string , "signature" : string } | 
| Fields | |
|---|---|
| keyId |   Deprecated. Migrate to Service Account Credentials API . The id of the key used to sign the blob. | 
| signature |   Deprecated. Migrate to Service Account Credentials API . The signed blob. A base64-encoded string. | 
Authorization scopes
Requires one of the following OAuth scopes:
-  https://www.googleapis.com/auth/iam
-  https://www.googleapis.com/auth/cloud-platform
For more information, see the Authentication Overview .

