{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102618",
    "entityType": "User",
    "nonce": "0x41b908b61b4609e2c137ed9dfa97f6db2472d445a2641383b89e4fcfd7bee324",
    "signature": "0xf1dcaa5f268e6d04e54540771fc0ff890672793b0c7557159e21b2964522cccb2cd8c770b08d5209e7d728cf0972cf0567e681aded32a575a1462221c9d561b51b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}