{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x710b01d53b0905ad4f2c230a6b3b8d3dccf6fb80aeec53df79c76b509014c175",
    "signature": "0xb5e6308bc88c45cec057718c177590191d15af441efed3e19878b29c41d1c7ef264228be8a006307c5bd638b154c65af099b1f3519e95eb610137d48c7db0d1f1b",
    "signer": "0x3F0e5297469e3774504A0e750F1885b06DFb9b30",
    "userId": "67883498"
  }
}