{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x86bb2d957f51a511d050291af9e44d127d9bf4dad9742519c4d255b43c08aba9",
    "signature": "0x8c7212dd9f6e6f5936e3a97f7e877a5a9205e51014e5c7aec1a8ae120a9904fc29cd345c3c659bac7b5025e1d694849089a039502e1adc8b98af1020e76084bc1c",
    "signer": "0x9c1a2996a6DCe12e947BD7C8A755b6150A3eD5f4",
    "userId": "474113241"
  }
}