{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1898740",
    "entityType": "User",
    "nonce": "0xea5bf5ddc3da8c610cebc2f175cee981f81c756f7151629b0102e5a704e742a6",
    "signature": "0x942844347e495a39f500dfa641138512bc7f486112f3339ec437601f3159f8b14393df7fd3e7e593b2789d2956088770beff5a8fab9dfd8ddb1f215ccc9c2ef01b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}