{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x629f0c68d9760541e81ae021b86a4b9b804873eadf0755fedec9d1e3468c6985",
    "signature": "0xad9140baff467145bbf4c969a11de9bf78a8ebbbe8a98e41a324c9ff0bee18b95109554e74f7f5fc5fbd64242b437d3a11dd1e017e6dce7075e8a692742583a71b",
    "signer": "0x4Eb7b4d3E5A99eeD9Fd090eb5C8692d905b61EF3",
    "userId": "94041"
  }
}