{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389480347",
    "entityType": "User",
    "nonce": "0xb4f2fa55cacadd74389ec68c654b80f25f64ecd9a1ad64335b1c2b16136d4253",
    "signature": "0xf6192aca7b5689815b65fc9e41c6968b18e45cabe4f66b77cc1607b67dc350bb30179f068f9e5720036e4ece443fecef8ff4c4628ba38a766647389cb1fd634c1b",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}