{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299215",
    "entityType": "User",
    "nonce": "0xf624a81f67097deb4b471b2fff071802c6f60df0334da595c19705879804c175",
    "signature": "0xac23a873a7cfeedfb3da74b14317abb6e2c833c09372a10027b53183c859458e61afca97c446273eb0a9682a68cee6c02bb69f673342d0168d585caf6e2744aa1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}