{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903579998",
    "entityType": "User",
    "nonce": "0xd797c12cb8068695d0b9f16e2a5871cf98abd580cd91907b4d2a3198f20267cf",
    "signature": "0xbdceee552437a15aaace275631a018cd9dd7910f7d4955f5e005bddef7101fb5071b923cb808167bc10a569433193ce8c05c93f2111e94f2c8767333b9afa3c21b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}