{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0eb54ec0a55672c8a538ef6dc43d920320d988f5c0a94b787c03d40d854501c0",
    "signature": "0x9e936a6ce31bb9316e933e592117b741c8dbf1dda09bdb92b7f15bbaeb80b2c0318501a79dfb8b7052927b8f0c4edbc183cef7a2b74e01b399f80adf6b3bb8901c",
    "signer": "0xe3418cCa91C667130Ea5469A336DaF057b07E7D1",
    "userId": "736544419"
  }
}