{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0xa342fa7c3f80647697d0b938fa7b7199bff0fbed5e2869fdedfae8f556ec308c",
    "signature": "0xecbd53c2aa638c8e3b1fb5fff6c2b8771f93f1456c90a89e2afe17351f1d67a65bbed1b1676cd89a726b60c31d09fe075c206187377cb70b4ec422d9d12fc5c71c",
    "signer": "0xe64d995c4f4919f3F47574BD9Bc28505f0CD7689",
    "userId": "253160273"
  }
}