{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839400815",
    "entityType": "User",
    "nonce": "0x8035f48044e8f928eb3b3116dc10b09d86360a6a5320f7b23dd197c6c66ae30c",
    "signature": "0x99d8a1108a8fa0f7c2e7948a4439a7073c59d1b8cff390bb378c75ca7db7ec84699944546a6363f3ac42e8875fe1e2ba267734623f34320870c681458193cbf21b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}