{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0x0012acfb4b6696e82e4bf0e8b592231be9e6719dbc362750f7249bae37f87d47",
    "signature": "0xcc73e6d4cc4e44f1992cabd43befc079100ce56f3bb725bb881e689fbcd1189814f9d4d142d70a244d876715c4841e9682cc1c090a6abd576a1f13bdf21e90e11c",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}