{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319106",
    "entityType": "User",
    "nonce": "0x281e5de824532c1b4f9177bf4c5b639cbad58c95e04d52a119862e853d4ea627",
    "signature": "0xdd4a813bf3698afddbbcb5fd4371a1fe6a1e00c4482ce07f5390d992972c7dc56a059b34c738b6ddd7099a7734494ed89717a39f29426988d2b3f2afb4165e911c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}