{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x85934737fe26316b551f04583a1b954ba6f7c65eb29eb12f03ebe785a18e8e45",
    "signature": "0x0bce73ac5021b41c67999a4acc4f67868a17d21f71729142128e37492a275d4f09a038b00656c166e6e23c80f288ec72b36ad3e9f7e4de0ee996aa4c43cbfd141b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}