curl --request GET \
  --url https://api.prime.coinbase.com/v1/entities/{entity_id}/cross_margin/risk_parameters

{
  "risk_parameters": [
    {
      "asset_tier": "<string>",
      "base_ratio_long": "<string>",
      "base_ratio_short": "<string>",
      "volatility_rate_long": "<string>",
      "volatility_rate_short": "<string>",
      "volatility_low_threshold": "<string>",
      "volatility_high_threshold": "<string>",
      "liquidity_a_long": "<string>",
      "liquidity_a_short": "<string>",
      "liquidity_b_short": "<string>",
      "liquidity_threshold": "<string>",
      "basis_offset_credit_rate": "<string>"
    }
  ],
  "offset_credit_matrix_long_short": [
    {
      "tier_a": "<string>",
      "tier_b": "<string>",
      "rate": "<string>"
    }
  ],
  "offset_credit_matrix_long_long": [
    {
      "tier_a": "<string>",
      "tier_b": "<string>",
      "rate": "<string>"
    }
  ],
  "offset_credit_matrix_short_short": [
    {
      "tier_a": "<string>",
      "tier_b": "<string>",
      "rate": "<string>"
    }
  ],
  "margin_period_of_risk": 123
}