{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721084704",
    "entityType": "User",
    "nonce": "0xaeaccc009b413d7a915ddc61c4318d8a6b621acaa50d0118d99e9f7e3348d28e",
    "signature": "0x771ce0e34ec9384118f828069d79e00518f3976989bc04e473c6a1a70e300e9820464d02d9c60ab75ff75d6abbd352354ec7596164d4d0cce4a282d6562b359e1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}