{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450156790",
    "entityType": "User",
    "nonce": "0xb120bb030773b74d141f4e37e137e1eb8cec28f9ede9cfc07ebe7537c0042aff",
    "signature": "0xbc269bd80d33d9b1f49135f64cd7c1484d629df005c937da78497a98866be7fb5ac10cb64e9601150fa7dda1c19693f9b37c95a0162c5767a340d5b6a4dba20e1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}