{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4167ce0aa9f494f9b41489a3b5f0a3fba41843c718a33f65617953a4f11977fd",
    "signature": "0x3e7b2038e8572f046d287209f5081d83b8b57ddcc17dd40f0f66855153556c995f388ffe8b4e84f1e3c465d6b14157c3a57f7ce49b6a55e43284fa29b3dc7d391c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}