{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175670",
    "entityType": "User",
    "nonce": "0x737121b54c784f58d85f1480016dc420a4ee80e947794f495ce884fe8496b801",
    "signature": "0xead3f4f25e8fa675e282999de75ed0c0fbc5d72bc2d6135426d811ec0afd1e4e79eaefcaeddf938adb55e0a39746fd4d3d423567305c972962e430d629cc7d151b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}