{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xdd186ceba6c5a53773ee61c0d6f448c4a2ab1b49cd43d65899ce043f066bd0fa",
    "signature": "0xd3ca4b728339ef7e76b503da67dcd284fbb3f2c74be54e0a8874f5a86efb7cca4f4ae56b0ce67a21cb14f300f5779712e8990a62a57477c3836bd081b46210871b",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}