curl --request GET \
  --url https://api-testnet.context.markets/v2/markets/{id}/quotes

{
  "marketId": "<string>",
  "yes": {
    "bid": 123,
    "ask": 123,
    "last": 123
  },
  "no": {
    "bid": 123,
    "ask": 123,
    "last": 123
  },
  "spread": 123,
  "timestamp": "<string>"
}