{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbcc59940353ee0da5973c3429b027c1e3cfe41dba6458dbcc6b4f1adcef389aa",
    "signature": "0xcca6cfe26346eb121fd7864c94fdd87b0da8f9745716c9754763c738733bd2b5034cbc5af443a24a369d30a79790f7c8da8e0b727c0426bd10968d30d50436281c",
    "signer": "0xD03b09febCCc5D126F8F29305ac144971D8101b1",
    "userId": "888493263"
  }
}