{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1202ce1469fe3b6afe93707599e2783bea5fcb72b74319383acebfbbb2357af6",
    "signature": "0xafc336c96fdeea6e9ce58b1e0d8e7a9a2346c6da968ea090f42dc100f0cfc0d0329c4bd23f26951572df8da355492afa53fc43efd749cab1326734846dcd85891c",
    "signer": "0x7893A4642D9ca0D6E669f0FB5934a78d1b575bcF",
    "userId": "929541105"
  }
}