curl --request GET \
  --url https://test.deribit.com/api/v2/public/get_combos \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "public/get_combos",
  "params": {
    "currency": "BTC"
  }
}
'

{
  "jsonrpc": "2.0",
  "id": 2,
  "result": [
    {
      "state_timestamp": 1650636265101,
      "state": "active",
      "legs": [
        {
          "instrument_name": "BTC-29APR22-39300-C",
          "amount": 1
        },
        {
          "instrument_name": "BTC-29APR22-39600-C",
          "amount": -1
        }
      ],
      "id": "BTC-CS-29APR22-39300_39600",
      "instrument_id": 28,
      "creation_timestamp": 1650636235000
    },
    {
      "state_timestamp": 1650620605150,
      "state": "active",
      "legs": [
        {
          "instrument_name": "BTC-PERPETUAL",
          "amount": -1
        },
        {
          "instrument_name": "BTC-29APR22",
          "amount": 1
        }
      ],
      "id": "BTC-FS-29APR22_PERP",
      "instrument_id": 27,
      "creation_timestamp": 1650620575000
    }
  ]
}