{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464258",
    "entityType": "User",
    "nonce": "0x892e4a3d290cdc2e2ac66d045700661097188c39f0ffdfa128a25549e67a4e28",
    "signature": "0xa8f832b8fb4d49cc2160eb9ca2920c8c8bf1dbf437ae9d7c4bda3afde3d533334e550e954def4c99a7841ec2dec93672e382852a99ebb57a819c10f410dace8d1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}