{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1408945",
    "entityType": "User",
    "nonce": "0xe1c0c64cbd72af43ad5bfd4ab57809f2cfa60ac90ab3585d5c4ccf9ebcb649f6",
    "signature": "0xd38dc32a4cd805190918b25715e38ebe15a27f3c291923ac5a75d1e46e7625076a3c10fb997e967de600e9360159f3c893503e05d3a458a985336eaca3a937c11c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}