curl --request POST \
  --url https://api.example.com/api/v2/projects/{project_id}/members \
  --header 'Content-Type: application/json' \
  --data '
{
  "user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "project_role_name": "Project Admin"
}
'

{}