{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1212434",
    "entityType": "User",
    "nonce": "0x5e6a0963f15c28928da09580251ab5d404f3fe8f1c6b6dbc31b1c37bfe1efa9d",
    "signature": "0x89d369d2827a8d8a5c30f7d2df01d91605820cd173fcd4f1507d8eeed465e8dd6afec57299b8eaf0e80040bb674b3a04e9ebd55062fa8346225343f4324fabfe1b",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}