I am using Jira API with this Link.
I am able to get the tickets from Jira to my ASP.NET page but when I am going to update some field of the bug from my ASP.NET page and calling JIRA API Post/Put Method then getting error. Pls help what format we need to send detail to API while calling Post/Put.
@vibhugupta Here’s an example PUT body that will update the summary and add a label to an issue:
{
"update": {
"summary": [
{
"set": "Update the issue's summary with this!"
}
],
"labels": [
{
"add": "foo-label"
}
]
}
}
The docs for the edit issue method are here: https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issues/#api-rest-api-3-issue-issueidorkey-put).
That being said, if you’d like to share exactly which fields you’re looking to update, someone here can help you to form the proper request body. 
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I am updating status of Bug and posting comment in bug.
I am writing my code in C# and calling API using httpclient.
Please help me how to form body so that my request may go through.
@nmansilla Can u please help me out with the question above