{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837401412",
    "entityType": "User",
    "nonce": "0x7c916d3226b7df824383da055dd244fa9eb35039e7698965c762e7eb94bdd648",
    "signature": "0xd9edbd7c4c97097600c6c71c14c69b0aebbc738dfea09b0bb056edab40807853716416dae66997dd3bb1c91adb2cc716009258fac3d8f6a6fbc7c1e83b37e0541b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}