post https://notify.unmarshal.com/v1/subscriptions/firebase/unsubscribe
This endpoint allows you to bulk unsubscribe notifications for a wallet which were subscribed through firebase
Chains Supported:
Mainnet: ethereum,bsc,matic,celo,avalanche,klaytn,kadena,velas,cronos,fuse,fantom,arbitrum,mode,optimism,manta,base,aurora,moonbeam,movementnetwork,moonriver,partisiablockchain
Testnet: bsc-testnet, partisiablockchain-testnet, movementnetwork-bardock and redbelly-testnet.
In order to use notifications for testnets use
  https://testnet-notify.unmarshal.com/v1/subscriptions/firebase/unsubscribe	
along with all required body.
unmarshal.Notifications
   .Firebase.Unsubscribe({
       deviceId: "deviceId",
       addresses: ["demo.eth"],
   }).then(({data}) => console.log(data))