{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8223",
    "entityType": "User",
    "nonce": "0xc97d834a35b14b4e0b6650f01e51b12a3677c886e0246401f43847eb3469b781",
    "signature": "0x81f5ea953e0de10364590113b9b2a455957e42bb6b429f528543071e18bf79987e13a0700494adb404a9fe289d031093d7d89a4c7ab0db2152efdbed9a46cf601c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}