{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273387437",
    "entityType": "User",
    "nonce": "0xdc13eb146502d0661747d2afb9acb633150b37ea22157380429ed259c32a99bd",
    "signature": "0x2440baa287aec1995ddc5b1fa7666ace3a467b71cf7dbea8fe86165aadcc09fa25bbfee29878af82a8e9f97232d8bc0274183b4c1b027bc88b14aee284b97ffa1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}