{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93080a21047ba0b533191fd618550b786cc59c35e2676dd5639cc55d2cf5e9ee",
    "signature": "0x77a676a661e55e9ceaee8c9b390b2b6cdd0e371d2e4a9cf09f79d394a1d33db40cc383d21de5b4eb8db298546a2fbc6effa50c93f9ef2ef5100cb61be75178a11c",
    "signer": "0xf0CB0bE09587831c3cC7689f3e01De1457073033",
    "userId": "743836779"
  }
}