{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391694",
    "entityType": "User",
    "nonce": "0xdc1a3a4bb0f62454578951615dbced1314541ff9d66ee6bfeeed16daee7423a7",
    "signature": "0x908133d4bbc3d2395c7805ef0766fbf93031c0f54bad3b34efa96788d1dac37e0698e5fc0447726efba934953e85a9a55dd362d0d9aec06b24d9c2a740bb49261b",
    "signer": "0x37C1d552353F554Ed6589cc59E905825Bb8E1778",
    "userId": "564474386"
  }
}