{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x175d5f02d0c3f7f2ffe4bb070f2f4e540fba8cc484a91acc860539dc5897524f",
    "signature": "0x9ef7a3be0ba1ac5712d9a3d1818297844ca2d4c59be54b0060ddaa42965d29e6034c383b272e694f6f11453572de4a9ba19f7183d5d1c52a5ff2d25ce8bccc7b1c",
    "signer": "0x0E1419Aff1544Dde5c4eebbCfA208Df83ACdE40A",
    "userId": "564626302"
  }
}