{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x15595c52bab95706b6389fec1af1e7bac3bfeedf5a5ace1dfb870fd2e8f1e429",
    "signature": "0x3ff308c72bcc2633816aedb3d66cbcb5982e436f4bb7848bab1301c928cac59758a3c0b3cdeab3f74df86edec92accdee653e1817c7f9c18f7e3dd2c9fb04d2f1b",
    "signer": "0xcE1000874CF7A0a7b16c35A55F7D6f10C607A868",
    "userId": "442277469"
  }
}