{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64142",
    "entityType": "User",
    "nonce": "0x6e7797d59bd5be2d896264b6708ece5cb051166a5b9f670fee86abda8b3d74ba",
    "signature": "0x48a0c15330c6bb3901eb360965247d88b87097791897a944cc0bcb2c69c2b17c768ebd0a5effbde4a5e475ef093966f357a6954743c9e0c118c05d7147e9a9581c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}