{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17577",
    "entityType": "User",
    "nonce": "0x91e0bb354b086242de00492c759f5af7c6de4468b05a869a54839ec2bf80e08d",
    "signature": "0xe83fe90a027a40310615c11ef529f9277ff6bf5d2ebed9b5a6d195d047bc9fef5ef82f6619fcada5ce275a8566fad638c5ef25ebefc8e6a1ae686e51465274231c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}