{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x34d8fc492bedf7320b14595f68375998e28a5a011f0a92750482c783b813c66e",
    "signature": "0xb610576e708bda8e6f26b8c44bf8df31d2ff5c88770b60669e98d18948412619088f31e6fd1c80334ad83f62c59926ce0de662cf9392a5a3ce7219196fd572ba1c",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}