{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43971",
    "entityType": "User",
    "nonce": "0xd8d85fdadc87c4224c46c8f0b04a78ac08e2e91c48edbc2245f858ca3e306eaf",
    "signature": "0x83b2d4af2b6db212172d80316e0d252d0f1c43200266940cde14c625a7b70af049438e9e86946734aba8b7ed018cace001651d90bf87abce3865e458ab5339ff1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}