{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "60415",
    "entityType": "User",
    "nonce": "0x34c667e30eb7d5cec457bcb3a3aa0cc210f76116d452242528e637840fc7f555",
    "signature": "0x3f601df6d5915c85a940294099ff409a4b79902ada345b9d2a7225a16296b330599d924a31d091d1bfb78836fcaa9a2bf0e692878d720dc5030d02358c063f3a1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}