curl --request POST \
  --url https://api.devin.ai/v3beta1/enterprise/members/service-users/{service_user_id} \
  --header 'Content-Type: application/json' \
  --data '{
  "role_id": "<string>"
}'

{
  "service_user_id": "<string>",
  "name": "<string>",
  "role_assignments": [
    {
      "role": {
        "role_name": "<string>",
        "role_id": "<string>",
        "role_type": "enterprise"
      },
      "org_id": "<string>"
    }
  ]
}