{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1535",
    "entityType": "User",
    "nonce": "0x405d01366c092dccede8b040e8377198b5ed225de73ea642121968b29b115f89",
    "signature": "0xd68189d49c0f442e94f75fb57b80e815a993ec5c6ec937a147583c185998d81c0fbcd91764266d62d728b69e3182379dc7d83d0721ed488b80e605f9d859b4a51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}