{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b7f1e965c1bf0e580a6496a1abfa67007b945fb66ed651c8d806ac3e911f7c1",
    "signature": "0x7da87e6a814081254bb97fbb4132eac53d0bd67406501d1c78a3487422e5ec3c147a6d703f3689a31ee1da70cf257e28e1c441a8279d34789a57186d186b3da91b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}