{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0xfe8449f4e208d7d42fdbed966c57b06fbec11bbc0f0d82124e5301546b99e30b",
    "signature": "0xbf6d4b54e06ba55a63b6001c8e9e2cb725439008542655bf21986d627a57c5dc4189124938e39885dca86bdda820b2779bb876f54e3ccd0d487362df166bc1081c",
    "signer": "0x292eF57C1FAAc86008ab58D5116e0ba424C9189b",
    "userId": "721084704"
  }
}