{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "385628",
    "entityType": "User",
    "nonce": "0x931d685fedd8dbcab6362b5c0c99214f2e94eb3e8cc2df72b4a60e7c32df6c69",
    "signature": "0xa41c041891b791e4059f751aededf4ca0961d9abf91701c4db5dde29c9e4707327e842639c4340b170565f98b387fb3a3e65a4052f0ae793e18fba471cb60f011c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}