{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x88745060e22446abb72bb06ac1575ad3f7a4976f25eaa60d681c4f5a1fa147e1",
    "signature": "0xf18318cc7ef33fbad4df5c5120813c068964488e7d681c10459d809ea6f3854a1018b850dd1ac867b63650f154dfde8e57be7ffcd3533a070870b8a088a009ef1c",
    "signer": "0x62d4816874d70b2233b74F1A103Bc646d08CeCE0",
    "userId": "724707352"
  }
}