{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121885",
    "entityType": "User",
    "nonce": "0x7513f872d125779dff83748aee50f8194b4b38b3519e72b14eed2834016f8cfd",
    "signature": "0x5d05b04d54127e8d3e5f0bda22167b6ffc292977f5164611885cd05255456bee7184048b2893fa175ee249b755cd0499842bd6e9ebcfbf00fc727039fe6a6bef1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}