{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "164389",
    "entityType": "User",
    "nonce": "0x0999bebce22f00d2fd637919761985f187bf8defb0d7a327ae4eac22105e4771",
    "signature": "0xe807040699103b72c4ce9f25bccd9bd5afdff718a9b7f68e23dda8274662d08715a821f6f6894178f356fee81c29f85299dbb2a5fe1a452961d02f047f4710091b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}