{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe3654f916cd7d105678dc6d9891d99f9d30f28e122168d9d6d0c3541abf15ce9",
    "signature": "0x0ead38b0434a44769d070b80651f089d5cae665b094145030096c0ee072549c54df449e5993bcb1fd826f0aaeca948b058348d6adc767bc416d7f35b7f84928f1b",
    "signer": "0x9aCe0dc489fd04D91e76D8AbCCc6E288E24d8Bc0",
    "userId": "481591193"
  }
}