{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xddad7594eb169ea5888d4b0ded6c2c01a306c8c7ac5b9b53b93dc89386481237",
    "signature": "0xaebcdcc982e96fd61a3ace62e69c1b79eba7f00d73dd9bee8c35fcb70957dd3f7e4fbaae901ee4e872ad239a8f6b567db9b9b4b49d20105d50fc8ce09db33dba1b",
    "signer": "0x1F72a867373a27415F35f6EBA90FDA6490780a43",
    "userId": "243685858"
  }
}