{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99dcad314a082471b8515adbd39d3225cfb876e7592482654febb55ad3131c2d",
    "signature": "0x179faeb50cab8141693b777ddb170e8ba06e8d49e2de09024dfb135d6d0eda2c7a592e2477d29e1fc54544247cd70860f32609b80f40b3e97cb0d518ce69fc891c",
    "signer": "0x74aC9A0a8CcbFa0799AF567008d69FA07b727105",
    "userId": "480700475"
  }
}