{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64468c353f1fd52d055d415ec1a39ab94f5b2afa2f644baa963cf4f5c6e7ab5f",
    "signature": "0xfc04fe68defad73ef43f7333ae7690b772b038dbb9910122f22bf8283b4598ab10866a3cdb27b88eff1ac082181e94847360074d3acea36e8953993ce24ac8871b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}