{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665720057",
    "entityType": "User",
    "nonce": "0x2f1afd319f3674dcf072e394f5c396fff2896a6b75d3c7afcbb27596e0e2e58e",
    "signature": "0x3429bd30e57413677000194238dcad743e1e5625f0b2ed9003193c7042fe3bbc2754bb88faccb363af44a32985f86f9f83e244f88c06f0d375bebfc6254724d61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}