{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x20e322ad7d6a2927b644d766c45a6457a1172a693a01570e829dca552c2e158f",
    "signature": "0xacf99be81cfdfc0086621caa82adfd99d1fa340317878fde8a871b6f97e428527222ee4f1423094754039db6e390c2299140be9c1b64d5197ded5bd91e7ec17d1c",
    "signer": "0x943e3034Fc47B278c77A0D8bF6d68320A1b0481e",
    "userId": "65913693"
  }
}