{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd37ed42f678ac9fb4030ddd7cc683382e753231452c8de130d316af3d11ce970",
    "signature": "0xd37e838070a28ead680fd0e2a1b456aa5c2b5050d4b79b0ce47a5be9f73ec9590522f8b7b26ef2b6cc6f63a1728d7bdff234050528a7c43446c4f2a3eb7a25a91b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}