{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9c9490ef6833ba45ea5892420eff92a48c8bd113a6583ad83db9f65c3a6ce289",
    "signature": "0x2779ae5165e8e18177ca7624902c49c80613df123121dcbe011d6ba312f5f6fd37cb13e33e55639fae8bd368fbc4f707a83ffcbb8c44df43fd7b3268c2afe6ce1b",
    "signer": "0xb24605B7956A79979b6f739F2B49B67C8a42FD0a",
    "userId": "511545623"
  }
}