{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x607e118ebc5bebd26068a842327afaa4393499235db9d316ea27b7ee625db648",
    "signature": "0x0818447c523d734a6df23c230577c16a81331f8b510474492947996c0f3920b90f3f2915858349e56bab86e8a4b4da45ff74b43470c0a776a630e1c9628d645f1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}