{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "983568397",
    "entityType": "User",
    "nonce": "0x8fb66e14dfd52305609d09e9aded7000d7186fa9df863e740d68f71b3caf43c3",
    "signature": "0xcfd7add153d54ad0b987e501b83c750399bba4618cf1e7c7e233aa626a3ebb67483fb7ee6bac1515b6cddc747f97ac01fc7cf7a8be0f0e81a9c54a840c9a71061b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}