{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125499479",
    "entityType": "User",
    "nonce": "0x13f4a397d633aa18a86724a4f447625095bc2a565e7e661f4fcc5b05be3d1af5",
    "signature": "0xae0ef2a600b920b340bc417cc3292d13063d7e20eb5570e8f9275039dda8780675f78a8d30b3525ac3eadbf60d7d6e8c8c1bc0958d445a65212c45d6b73b305c1c",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}