{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7547e8df3de2ad2c5ff8fa90788e889db3232d02ba5d979f87e760a971b436c4",
    "signature": "0xf891e27f90f5b6525734015973d0ae6caa84fe78d6e1ef916312a34bbc51bb9304d3bfe3fc6860739b4e33f20d486c3bb2d1653c999ec1730b01276a7ad4325f1c",
    "signer": "0x3F2613CEe415E5d952B22278b4E80b8B73433334",
    "userId": "713143141"
  }
}