{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4f7979edf2a235ae207e7dcb3ef20f9ee00f5a9b5a8b3853a7999ca4089cebb2",
    "signature": "0x2f7c89479c07885cc23362dfba37ce2779484ffeca976362ce090ae68197eb463ee4efe4ab49c8f50018b9d35a68007e00c0c25ca09f908dfd19093ae57f01001c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}