{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4cdfe605cccee4936c51b23457ed82c961a98772cea9afe6897dbd94ecb319cd",
    "signature": "0x7a8e3824da17d9bb8e377a542ef53edc04b4aadfb768f45f31685b00d19e8190625ce3a8726eee6d8a6de9e451f31198e077e2fc94a771ce5796af9dd61b610d1c",
    "signer": "0x3A9bD85F5379a7f7B599d40E92690178652B8f3d",
    "userId": "429081221"
  }
}