{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306115",
    "entityType": "User",
    "nonce": "0xf841a1ba4fa65d5f8b78e7b009ac7de699fa458421644ea726d6f36d3a1c92fb",
    "signature": "0x9ca94ceaae33551ff9ccd31e155454c5127c10968931abe57d79a1e0cd4625a81e0411d95b44524357c679a08e34f925aa84a842c93ebbfb4ba54e9038331bb51b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}