{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x404e7257be007f2734f430418f3be3eb84fce91f19218da6b699cef69697ac3a",
    "signature": "0x927bacd79e095d27c3c63b9770305da598e7bdadfe62dc99bddb851564d7e0e22f30d0560ff1d6476bf62279315f0d2c770b3a8f0b4351e4c946e004c8e251941b",
    "signer": "0x2C8378e2B6554919e06e1Be17D97fC2fFc0eDEe9",
    "userId": "557110086"
  }
}