UpdateRampRequest

{
    "rampId": "proc_12345",
    "presignedTxs": [
        {
            "phase": "RampPhase",
            "nonce": 0,
            "signer": "string",
            "meta": {},
            "txData": "AAAAAKg..."
        }
    ],
    "additionalData": {
        "squidRouterApproveHash": "string",
        "squidRouterSwapHash": "string",
        "assetHubToPendulumHash": "string",
        "moneriumOfframpSignature": "string"
    }
}