PENDING_MULTISIG_TRANSACTION event is emitted before confirmations are added

[Uxio0]

For sending notifications and events to the event queue we use Django signals. confirmations are stored in a different table. So first we store MultisigTransaction, and then we create Confirmation and link it using a foreign key. The problem is that the event triggers when MultisigTransaction is created, so if a client checks the endpoint the transaction will miss the signers. Delay should be only a few seconds, but that's not acceptable.

Solutions

• Invalidate signals and trigger then manually at the end: tricky and hacky solution
• Remove signals and manually manage when events should be emitted. This gives us total control but requires a big refactor of the service

Temporary we recommend to clients to add a small delay when they receive a PENDING_MULTISIG_TRANSACTION or EXECUTED_MULTISIG_TRANSACTION event