{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd1422de1cf7e7061f130b761941d1270f9f40de773c9111eca90c1237e89c4a1",
    "signature": "0x2f7d162eadcf8a85452327482cc8ede2905a7a92357008a475c8526b8a281bfe4ec41d48e0ca37f7d7038972b692498944600088162d3e277ec2eea8a73d8b851c",
    "signer": "0x2fd9a04B003c051a17F494b483bd14D9b4a50f04",
    "userId": "408787447"
  }
}