{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x479b145f367555561db37cb3aa628b6440fbc36d1423b8b15bc4311a30d2476a",
    "signature": "0x237b654bcc70858e56acc4955ef5f2db7f1e54c279e3af6e959e8c8c9ee282ba0cb9c6bbc0045281a3ac549468cff72350cb34278babd30288e90ecf196345ef1b",
    "signer": "0xE1DD0Ca0cAfb64Bd4898234F7D77cD444e76AA42",
    "userId": "468918303"
  }
}