{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423",
    "entityType": "User",
    "nonce": "0xbb2d01e245ae9cf819f79f39e64fcd94aab49221e44ddecae06a5d6791d4d16c",
    "signature": "0x999d2b0bc31a4612504837c783ce2f7d41ac478944638c867d21a8b07cdd283e1cbb72c75f58e8d07b4a2887c530160e0e075b6105f3914069f83372571247cd1c",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}