{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb4a16cdc37ec562612f516b19eaef817aa599a7aa1c232d7ea78e9c2844ebb31",
    "signature": "0x5142cebbe5dd8c87bb46d6f61a935b2a8f4e702c98dc664985a8b0f79f4205da3dfdb40b140ee0931df59a4e8fe886f25e23db4ad901c5c5bc4dcf806711ceae1b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}