{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6a45330cef11ded84a7f7180406ed0dc93e9ae4cbac810d1acc73c5414de490d",
    "signature": "0x76dd3a7a345a29cee225b307b4f3d21aa905d97c5190aacf6bfb6cd4dd88fc994939b7ee1c81c081feb6f5e444c23bfbf43a6d2255db64ec81da65aff31d1c8f1c",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}