{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "856473940",
    "entityType": "User",
    "nonce": "0xb8ad93b20dddd0407bf5856fce902d73afb7ee94503b645acfc253f566b90f31",
    "signature": "0xffde02c6064e943e55a70122607cce89280445025dd0ae52f03abc97b537262161d62f1b515729d35188e7e057285cd9acebe31c963c09b810d633b6f5c63a2a1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}