{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b2ffb246a7b97397fe6e60c348349410d6a2970ca61d57f698f0fae102e9dc6",
    "signature": "0xd99497e1ad3fbcdce26a114cd98b83a4c72876b47c9371e847cafbb08c52a619163a8008054a3740d980a60f6f5800cee4ca0f8ec476c9a33baffaad4c7152da1c",
    "signer": "0x4E9AdEAFEc83438bD9F729f649244bFec8Ca2D94",
    "userId": "488742999"
  }
}