{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "279352440",
    "entityType": "User",
    "nonce": "0xdcb3f7f34a980bf55a89e58c339e54f501e264d02a5608fa236692d50e74273f",
    "signature": "0x9877ca75e94c5951b0a4510018d47249ee17a779a2259ab89b076490441e80a33d870d2e8f7f27e08afc4570dc549f431b66db79ff152427abf109bc78c314d51c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}