{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x9280f75ca836d9e605b57060a9d64db5272fc831848b06e9594dd55c4e0abecd",
    "signature": "0xc1770170537c45c5f06cdc2298426a0cef609d7b73a868314e463d22ef6f18b5538b59d81cfc613efdd79e92481b4e945c42c67671e2e13138e404b1d78c32471c",
    "signer": "0x4a26E1fdd6FdeE62e6A343d231CF3700Bf1e26bb",
    "userId": "55875"
  }
}