{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xc93a8f3e75eb90549d91a3007790e184421fc046b3fa674650677939780e69cd",
    "signature": "0x1bc9f04bee4c05fd0e57258ad8041bee6da419dfcc28466e655b835db3aaf7920c07c8394bc7fc1dfa81625f1678a77ada68859a24026b84ecdd6cf5310e56151c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}