{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339273",
    "entityType": "User",
    "nonce": "0xf29209a38570f51a8a0893b4cb2bce723d545e216b06be5c7ccf693e8cb476db",
    "signature": "0xe3bbe53097844c52fd3f85489b4c7e0a22ce8999740934c2f7d584e33365d1c255595fab2ce5cd0e390b88233b8e34c4547bc730b628a16ab064ab4c39c5b0e21c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}