{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464100900",
    "entityType": "User",
    "nonce": "0x9346c990cc266f8ae61cf6c0718b85ab290aaa128e2852be3ddc72318f029df5",
    "signature": "0xeba07035ba209c065ab8d5b82a32d124b79d79c4fa2339e2d5a0d89e49648bd05991184391f4c8b382da19bf2c2eca600b718842ef1d161e02012e0968d5d4851c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}