{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3548984f73b5247921bbf8a9546100f62f7d7474a7757a9c8fba987d085719cd",
    "signature": "0xad9b9707bd4e8db54fcbc3099401c2460cd00a35b098ba36540c260b9117227a2e6037046656eedb909628eeb8833356e6c43fed08f6e4041a9d65d36eca44ee1c",
    "signer": "0x6098f93E4A9454736fA73260cf9f79FfcE3D67c7",
    "userId": "337267477"
  }
}