{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x3b15df35a0f4b0fad8115ac4499934c7bac3338dd63ec3c20daf32f51775ce3d",
    "signature": "0x0afc322a23e31f65846202f1d788c76a20ca887b956a8a8fe964431370fdbd8417526fc136088af0a6fdf06970e1271384f86bc6618c71e148823a91cca7fca71c",
    "signer": "0x42cB1e20D724BD902Af64cd85c700BE6118500bD",
    "userId": "47154652"
  }
}