{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54225",
    "entityType": "User",
    "nonce": "0x492fefff02f583028c6c283badcf908fa51b61f761eab9cdff0cb7aee6c4335a",
    "signature": "0x9fe5dcf571f874d1ecb4ad49e7cc10d596a01ebb91c524388a1448979babcae912f24a433a3d5932e38c5eda9885f5c0f90aae8e104b7447339eb53172d1d06e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}