{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940623089",
    "entityType": "User",
    "nonce": "0x73495dbb409c161c2945ef9f614c220e88b32d0147a0517be919c1dc9df3f62d",
    "signature": "0xd737e98406611a544879a169029c49f65a28903b97cfb6be4409d64d206916034571c747c3c759c479d59059eaa67a23295dc8f9a6c5851e41df2072dcf14bd31c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}