ass="hl-7">once</span><span class="hl-1">(</span><br/><span class="hl-1">  {</span><br/><span class="hl-1">    </span><span class="hl-0">method:</span><span class="hl-1"> </span><span class="hl-0">AlchemySubscription</span><span class="hl-1">.</span><span class="hl-6">PENDING_TRANSACTIONS</span><span class="hl-1">,</span><br/><span class="hl-1">    </span><span class="hl-0">toAddress:</span><span class="hl-1"> </span><span class="hl-3">&#39;vitalik.eth&#39;</span><br/><span class="hl-1">  },</span><br/><spa