{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd07aafac46a8b6ec9bab68608546ea93f9b3eb2b9d02d276802d0f805448349",
    "signature": "0x5ae5d1d5b3fc6b7814e298847a27e2c7b0207b5477784f60be7baa7bbdc02edb6b9769966f5639b91f13b80b3edfce3c87c09d6b78eeccb719944f9b066959e61b",
    "signer": "0x50D43616b96379147EcE96Eb46A34f4CC5c0D674",
    "userId": "428639265"
  }
}