{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1021009",
    "entityType": "User",
    "nonce": "0x0a3653454f4ee4b935050fc31c142b3085f2007de1737ef0e4c5828c020118de",
    "signature": "0xc9715e2df6f4b2b60225a07219f5bcc462b43ca875c8510eac9ae78c74681eaf0fef78d79c5d19b27da98f09be0e654fe0bee8db4e4e426d4ee8184670d175ca1b",
    "signer": "0x8c69d6A0279c3c3181f9553414A3C98791E6CB3c",
    "userId": "580405625"
  }
}