{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990317305",
    "entityType": "User",
    "nonce": "0x11419a477679dc5ad18172a49bbe8d3e68c9ddb0912f6364f47acc5808c00796",
    "signature": "0x1e02f3d3d92cf609c8f10946859993a5394dbba3d65c99e4489a307702fc8c3a3e9ac316a67a2e658aba316c3d72ad7c241ad4b4720237bca2d7b4b0c2c7bbe41b",
    "signer": "0x705C3Be1F27A9694A390A0a58287440a6b43349E",
    "userId": "193978537"
  }
}