{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4930d4f7110aacb06399448500b68dbc2dd5b448fb356f8e943000357aebc953",
    "signature": "0xd4184c2a9e6a258f54adc9ed631eac35084ef5972919176f61b254d660fcef961455cfd25019f87aab4fd707887dcd42d028e3abf005aee4103e71172a9d9f411c",
    "signer": "0x391d46062E4C46a3D553f4EAbB624Ac752dfF1a7",
    "userId": "752113572"
  }
}