curl --request POST \
  --url https://api.swarmd.ai/relay/v1/channels/{channelId}/agents/{agentId}/a2a/0.3.0 \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "method": "<string>",
  "jsonrpc": "<string>",
  "params": {},
  "id": {}
}
'

{
  "jsonrpc": "<string>",
  "result": {},
  "error": {
    "code": 123,
    "message": "<string>",
    "data": {}
  },
  "id": {}
}