{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdf74bd853d729dea9293b79a539f72a5158a529569058ab471f0a0dbc5c2c6d0",
    "signature": "0x435e41ba449bb56a7dfdc216fc051b47be0857aef8a9e9745b5a463d5d5cfd234c7a6fa6651cd2b18915e8a47aa9321e572a00683c34f8aa7f01ece440ba53911c",
    "signer": "0xb7064d95A38c94e9883e3D32d96E879E8fd4272e",
    "userId": "151924512"
  }
}