{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774741623",
    "entityType": "User",
    "nonce": "0x787456cea9364c8bf19050e7f2c1995cc0e0247e766b3a0bf7d90fd98360b00c",
    "signature": "0xf32fa451d274678871c80e3f78d465eb98eea3720f0ba4c02ac558280b6ea81b03c1218a2c9c1389366e57c68e53e1ae20c97513df6f024fb1d111baafca53f61b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}