{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7710",
    "entityType": "User",
    "nonce": "0x3c8811d1570232cd6142f914649b044b637a514aa70882d7c5e96e3f1de4d0bf",
    "signature": "0xf780a7e60085c756f6ede4f094b1c905cdd8c28454ee5bafe806636c60aa3ed365ed952a394805a8a89c9bc1bee047e2cc113ea6b9d726413647e6504f42c4ed1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}