{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1523538",
    "entityType": "User",
    "nonce": "0xda6ff945d551b6643ca7c8917cc84dc2156bc9c929b305e03c6da614c9d81da3",
    "signature": "0x88ee00225f364ea7dc4c3960140ebb989f6c3af8b37d894c46e66575482fbe1d1e9d79b3ac84ad65c455a213ca1a8112e8f863823b8c6193e8c032c7b0e3a2911b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}