{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xa6412fe66110c6371f0ebcb6bb33ae2f888b230b16c53df59504cdf7442cfdc5",
    "signature": "0x0f2d737ac10b905a5a52e3fde43453d231b9360718c8c88e991fb778387491824ca7690faaea3671f7671b5fef7b25b1e17928852cb834c5d87a693a75c664691b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}