{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5e3a02f6d688925232b1b205c3c785ea793480e610b4a2af4c1f192ec53aea31",
    "signature": "0x43a5d499b7e27bd8f479713e0d96ade6fa05f5497953f2f902f65867b3e25ccb11055dd9ba72b3b071bd74a585d6575d4df23e5142cf117991d2154d0c6dd7911b",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}