Extra parameters for sendgrid send email

I can’t figure out how to add a user to my sendgrid list. When I put these parameters, nothing happens. The email gets sent and no errors happen, but the user does not get put into my contacts. What am I missing?

Parameters:
{
“list_ids”: [
“0a17845d-07f2-4405-8123-e4945a83c43a”
],
“contacts”: [
{
“email”: “test@few.com”,
“first_name”: “string (optional)”,
“last_name”: “string (optional)”
}
]
}

Hello @user16

Can you show where you are doing this?

I put it in the “send basic email” event, show below. However, I tried the sendgrid contacts plugin and it works!.

Hello @user16

Replace current user with a user parameter. The server (this is likely a backend workflow) does not know who the current user is.