{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcccf5314a26633812b609a66f93202201ae5d242e4c10a8412656b2a8c114d5a",
    "signature": "0x1bb82c86dff620b03fbdb6947d358849a516880cf3687d3bf7083925ff6082383c3f7d43239ee1ea5711d0d5ea71ccd3e9113b7cb7d7cebc25a899f5ae68cce51b",
    "signer": "0xE21b958eF8571be28419d9F769e2d4f849b2fFA8",
    "userId": "423488766"
  }
}