{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0xc1d3202b273035ec07e4a868e0b8180d110f9853c69f054686a2f99f35b14962",
    "signature": "0x9208cc7cf7c590f5fc2956d15533bbf60b15804662659230c42844ca62d407e112f6dbbc4940824131f01cdd105bd71ed86fa04668be4adbe6fb84febab884411c",
    "signer": "0x3B72fa667D52755CcB53B3815f3be52AD038A577",
    "userId": "211024156"
  }
}