{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x37d52fc2527f7118af015d19824767931b892a8a521bb0fd07b233827ebb69b3",
    "signature": "0x6f2da4957fb380383a44809b6b6e7bbccb864787ed1e9d4a881f82b45f27e1124c8b8c5fa53f6f528300e525c51c31393cc37d5e361028e3724d04fbed0e9e421b",
    "signer": "0xdD03ED106abBEF4982159500e32B8602B985a69B",
    "userId": "444965341"
  }
}