{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf6a2f4bdff6c5d3061880882f6371ad25a80511c7d64a6ec58f1537ab8b3d38f",
    "signature": "0x0bb0b4e6132dac2182709b083d5d8f407a59027a14de71d59f276a65dd744ffd4d669b60829592df0156e3107c0a523f2e83d07756715c0045386c6489dac3161c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}