{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138589",
    "entityType": "User",
    "nonce": "0x2ee465a35481e9ff8b29d61f30ce41cebe6e69772f20c1f2485bd04951c4c6cf",
    "signature": "0x411e1041fa70b4f5d063b5773f468f38516b462ced03fdf31ec8dd45b2ea73c2001a49e6238813edfc5b7d5578b524193bc7bea4b0d7c29678f817b454dea6a21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}