{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1709b9a00ed8e20ac25aa1e8feb2987cb061f12209277312a6f034a809374b8a",
    "signature": "0xd19913ec21bb6316beec8f0b842b391807a04081a6392f8b08e9a5e6a07188020c8534174b2b38a51da40823d0b01c6662483d8e72394cfef4f016ecb9aa3b651b",
    "signer": "0x8a5278b17C6F2ee8453191e032DEe68c40ff7c8F",
    "userId": "265245002"
  }
}