{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "99571",
    "entityType": "User",
    "nonce": "0x06320c54060f176da0af50d71c7f7440ab5d74023e4601f46563f227ecfcc6dd",
    "signature": "0x4f50153462126b455abe075cd85c13feb722ca3d80b0568c996f7b43b18fc8de361fb878cc9644b96cf4dde5a5655f35a92ae568dbaf14cdb746cfafd9439f071c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}