UpdateEmailContent
Updates the content of an email
EXECUTE 例：
EXECUTE UpdateEmailContent EmailId = '1187', FromName = 'John', FromEmail = 'john@abc.com', Subject = 'test', ReplyTo = 'steve@abc.com'
Input
| Name | Type | Required | Description |
| EmailId | String | True | The Id of the email. |
| FromEmail | String | False | From-address of the Email |
| FromName | String | False | From-name of the Email |
| ReplyTo | String | False | Reply-To address of the Email |
| Subject | String | False | Subject Line of the Email |
Result Set Columns
| Name | Type | Description |
| Id | String | The Id of the updated email content |