{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7b997a2498f8e66d01c640f24ec5fa2452482904d838deb41c57965b77ac17f8",
    "signature": "0x8c1578f62af55318db50351dc3cdea93329cf6beee2fee4b3cd89bcb6b791c7f53acf2b5b588af003d6a1a65e095d35d6547afd6b965666447546b7839bbe19f1b",
    "signer": "0xC839d7abeB2AfF3C72B7320bEf0835351AF7D1ED",
    "userId": "670991183"
  }
}