{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375501",
    "entityType": "User",
    "nonce": "0x025a6cf96dc460cce5050c2e617368bba7c6151f304a0c460f28477417d9b9e8",
    "signature": "0x8bc386ee3b6ce56936765f61ee345f664e07669240a710915782a89b7bc03c0435b69ec1a4f6c5e3c847d30e12dbb26c5d86d89da17def64fa6030175a2794781b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}