{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x219ce6a1be95b2fb9ac7eac17967ba786f7c1ab2511a6f78d6fbba8ad1356fb3",
    "signature": "0xa96f53221a8fc7146885b345b028914c80c97b6e575e8502946bd04b367e52ed60f2dfdbbdd6107a77eccd20ceff396c2d80515a4d14079cecb2708c1335ec4c1c",
    "signer": "0x26aBf374B6D612e26A144AB0045b94fBeA43C566",
    "userId": "66762088"
  }
}