{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xcd398c33e4cd7b62e311d581360d320bf6264e8ae0331e31ce0a5d9b2cd4d08d",
    "signature": "0xbe67aa28e50dfced278fe7e33b3def150d698480532bcb4e59892c024a9d1f910c21793aa8cc757aaec9342fbcff2e7c0dbd1bbe4a9e756da8101a11fd67d9681c",
    "signer": "0x5C13CD392EcB86FaceF8A07FC5B300833E86cD23",
    "userId": "167249"
  }
}