{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b87ba0a56c3bce9d3f8e92d591a6bfc48de6f5bc4bcddc82965367aa3b18a73",
    "signature": "0x36cbcf40b3b3644dce3b88de8c54eac08cc6c83d492be9f1ec386eee8aedfc7a72d285cf00849a55554c03f0c1979deed687fa5b8e5055fae1004f4abb4a92231c",
    "signer": "0x56E9Cc2778CfEa8013DB62E4BcA523376b174aBc",
    "userId": "639251677"
  }
}