{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf73592f698cd3f66b8a0e6fec1a1eb5b56574650ce8b494606fbfd6a74941c6",
    "signature": "0x8578e0af6269081d8a89e94cc8fe1b1dd0fd8ae97b6e9bf3b91b4482f99b098263f3e306d54e6abd0d7a05fa14e91d9931e003d98240e4721f5d8ee2a0361b1e1c",
    "signer": "0x0880BCB74D5456f4a1f957C6a1cd3617009BBbDA",
    "userId": "579497175"
  }
}