{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398277387",
    "entityType": "User",
    "nonce": "0xa16289c08ef2e54cddc975d8406516647dfec8bc9812b53c4634839a38de832f",
    "signature": "0x67c8268888d4d7e22dc096a9dfeb6aa1bca07fae2da690ae74ec64ff49fded830a498251f2023fb67c2a17d086c45ec5de68bef51e89c5fe3a73e1e9decfa4781c",
    "signer": "0x356cabAA7E8435B742370d31C5060c2B3E8CF6B0",
    "userId": "54292"
  }
}