{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556",
    "entityType": "User",
    "nonce": "0xe156852f0472a55ae2116cf9f7782ccd6d6df1f2a51a3662b7f1b456e23422b9",
    "signature": "0xb469f3141d0c1686fbbfa41f1a731c9c56aa1e2f0afebeb0ff948b2441ab8a4a4c233373fc373f76e673e9770488cb0fd81800c92adf3c2420532ee30da541641c",
    "signer": "0x821Fd8705CF3578Aa1b5F661C05Ef3bae2B94b7B",
    "userId": "593474355"
  }
}