Not able to add signer

[janewang]

Steps to reproduce

1. Go to the invoke contract on Contract Explorer on mainnet here

2. Use this contract CBBBUV6XRCPRL4C4K7DQJSU2UL37B3XJYORXDCXLOKMZUQFH4COCNANI

3. Cannot add signers

No fields to add signers.

[jeesunikim]

Thanks Jane. This one uses tuple and UDT. Add a dropdown to render.