{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172280",
    "entityType": "User",
    "nonce": "0x8a710511d220cb65c866908759c68319e92082fa250b23b7a0e413732b43991f",
    "signature": "0x6cb63c44f6c6969218fee7617083322362f58addfd30286cad157f367c4dc64c6804dadc57c3eaf0e9967d6ae319d6d235c7f7ceed325b3220cee972d970af241c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}