{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c4ba71fcee3a92164031b83c32f75a3a64bedaafbfdfbf318d7a2ff01e6fdaf",
    "signature": "0x3bfc09b6f4d0cbe11c23f9b255b4a82d613d42f29180148c8f8c8002368571b247ecc8f5b4f629e319469ee1f322f66fee9a82774904f1b6e0a5cb4cca80b11b1b",
    "signer": "0x815583947a7E1A62F9c2721a9aB961bB67Ef5c99",
    "userId": "361770236"
  }
}