{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "534459102",
    "entityType": "User",
    "nonce": "0xa4b1f18bedc7667deb75fc52ac98eea727e62da42f370eea28474c60bf8a6ef3",
    "signature": "0xc9b2128976f11bfd497b69c5f5c967f78fdc5fb60096b3c3c1b892055f8af7b76f51b2b14387ac846043bdf20ebba7508c0525d4cdd845114f5bc80fa7c6cadd1c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}