{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "851770389",
    "entityType": "User",
    "nonce": "0x31c7f0a5304001d2b16aa989bcdacef8061a773c81f794c613ca3f3036ac5b75",
    "signature": "0x65fd4946f194d1bcedd58507edf11f6490ba95d908c5be2a6193624945dfb2f33242e42c3f5eeae29831aab8d16698ad657c3cd87bd4fa974df57ee1dc181f971b",
    "signer": "0xBBFb57f7C9f15E0B0ED2b58d48a547a932DA5757",
    "userId": "322663854"
  }
}