{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51537",
    "entityType": "User",
    "nonce": "0x7a6a2951f0525688a5506cfa0cbc1bcf4814bba6df35660ea9865dda60c7c31c",
    "signature": "0x3e10d4f2620db07bb1816d86b2411216373120e9ee82e2e29b3e019a9570f2b076a4ebdf5985ddc7be940e9c121a031b72606f53caae2a64840a2f1ba3aa95811c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}