{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "501531",
    "entityType": "User",
    "nonce": "0x5596d081f4723b635bf39bdd7e6849d6c65c569bdb0d0d17a2c9893910cf4dfa",
    "signature": "0x442d9f4b0631e0dadb62739a1a4b04210c3ce94b182fe8443f60950cf13f587a5f792b0f2b1239d768e621cc2d610c0d10932785ae0263e2d7bfe53a6285fbf51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}