WSSUBSCRIBE

Add <network>@<table> channels to this connection's subscription set. params is required and accepts wildcards (*@swaps, solana@*) and comma-separated network lists (solana,base@swaps).

Envelope. Every command is one JSON text frame — { "method", "params", "id" } — and the server replies with exactly one frame: { "result", "id" } on success or { "error": "<message>", "id" } on failure. method is case-sensitive; id is echoed back so you can correlate. Invalid commands return an error reply but never close the socket.

Request

{
  "method": "SUBSCRIBE",
  "params": [
    "solana@swaps",
    "mainnet@erc20_transfers"
  ],
  "id": 1
}

Reply

{
  "result": null,
  "id": 1
}

Idempotent. Re-subscribing to a selector you already hold is a no-op.
All-or-nothing. A single bad selector rejects the whole command with an error reply — the existing set is unchanged.
No snapshot. Only future blocks are delivered; SUBSCRIBE does not replay history.
wrap_envelope is fixed at upgrade time and is not affected by SUBSCRIBE — reconnect to change envelope mode.