{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x02293bc88d2e068420af3ece4162e6e0e7dff648d05c30fb18910d6be2b85f4f",
    "signature": "0x5d9cbfb9a9582f5f514a31cd94f8485bb7344893f017689a479faf270bd8ae773ee54132137900e08f4ab6474d0c3a33622fffde222c840e9d5a59e66dd2f3811c",
    "signer": "0xbC993028883cdA43923c4b901d94fabf35E98752",
    "userId": "497510570"
  }
}