{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49421",
    "entityType": "User",
    "nonce": "0xc19657f5f5d35885b11d031ba353e9f966b34af97c131b7acb29fd52321fbe4d",
    "signature": "0x69bd2e3f6086a61dfc395be950bb8d879f35030afb79a38ce3329507add4c614482684b1e41ce2a6cfb0db7f6aadf992cbbd1df20bd74f7ceec795b1c61d097e1b",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}