{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe68060a2fcd75125fbcc270cf211f76a80e1d9aaf7b619c7463e6982b1280780",
    "signature": "0xf96f315ee5849536284238f0bab3db55965d3120964557f820ed35d97d1873902d575f9c71b42f2b4c969a7dc378318b4080f9c53e82cc9e5779de979d0bb5061c",
    "signer": "0x672e9a41a6b972AB2eD6BEB1D4a6e4F09dA4C9F5",
    "userId": "302680854"
  }
}