{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1e22498221ec31ac11d2c339967db4e2ef28dc364b67a8de52a3c17370c8a966",
    "signature": "0x3ff47203c9bee47a40395e5e4791d7e19c93b979e00637846bbad19df959e83412ab5d9cd1944f6ee443a21f5974aa7069b5d4f6b4b8af6d02858a7acd84ca5a1c",
    "signer": "0xA3f113472915b2f3E2ABdEb83ceAFec10dD6eFf7",
    "userId": "925577169"
  }
}