{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13214",
    "entityType": "User",
    "nonce": "0x6d002171b945028af9fb84cf78bb71a84ebfd2ef8911be0892588ec70c5917a3",
    "signature": "0x87ad9db3833623833f4eed1a470bd4953db1a559db6a5555c2970c25c2f8b236727e6f8ecc1e143fb7525fa2ada12a7f12a6cf268b2c29b4f7df543961acb7e91c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}