{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1713713",
    "entityType": "User",
    "nonce": "0x252af5ddc0ea0c5424126630f6ce71474503847c6b1e63dceab8a40edbba996f",
    "signature": "0xd7b2191eb859731d557eda8ddbbd651572f5daccf6c9bfa9e41b8806878676ca41495c34ce30791960a98338af669aebcccebff485696b9d66b7621067e9dd001b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}