{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0xd0c75a7f3450b44ba37ba4028a3b71e31a11d9017853fedc707b6f7eed96395f",
    "signature": "0x97da5ec6c0680c1e99d8bec9f5cb34a818695008030377209bf0f6f2c408fce5435962427ab65fac3bb6e3966004d342ce6fe29787774d32ec2a1cc5501f672b1b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}