{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870782458",
    "entityType": "User",
    "nonce": "0x3a3ccf22263e65cd7d162927d22383d7ce4b33a3387596d4aea20f700738098d",
    "signature": "0x5eea559616a73f0f50e631cb067b30f461109e8cdbfc47d1b187bacf053d717d31305ac063800dd1cc3dce17e1ea30c269a31af798be2bfee7983bb8236e36381b",
    "signer": "0x20690bD900B04126EBFAF3620E46F1645188CD62",
    "userId": "16326"
  }
}