{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x8ca0c11228a569493fcc32baf70426d6a8bda3e77412d7b049bea93a010202af",
    "signature": "0x5b94b1a6b6ac07cbe034ea5bae9048050fac04e474f8247b2b9091de46f5a84d181c52e857352406099a90ce22dfe5cbeeead5d810a01f72770fb2670801e83a1b",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}