{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16318",
    "entityType": "User",
    "nonce": "0x42e7b9bfc2467973cfa3c8f78a7f52a2d505c00d7d8b14a04f55b9443f8e97b2",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}