Wrong type in /eth/v1/config/deposit_contract endpoint

[pk910]

Describe the bug

Prysm nodes currently return the chain_id field in /eth/v1/config/deposit_contract as numeric value:

{
    "data": {
        "chain_id": 7011893058,
        "address": "0x6f22fFbC56eFF051aECF839396DD1eD9aD6BBA9D"
    }
}

According to the specs this should be a string ("7011893058").

Some downstream libraries (eg. attestantio/go-eth2-client) don't like that and fail on initialization because of that.

Has this worked before in a previous version?

probably there since ~2 weeks, the relevant code has been touched in #12872

🔬 Minimal Reproduction

call /eth/v1/config/deposit_contract api and check result

Error

No response

Platform(s)

No response

What version of Prysm are you running? (Which release)

No response

Anything else relevant (validator index / public key)?

No response

[saolyn]

Thank you for bringing this to our attention