{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125474",
    "entityType": "User",
    "nonce": "0x2fd1595722335c68d0ca226a3423cd8d3d35904cbba58948c0b6a6e34f5f5bf5",
    "signature": "0xee874a8e9952c5e5e376d490ac3c9218cbd530e5702d450eb5b76d4ea637dbc774b23b5f5e41444a5846bfac36182e5f1cce9b16786854425e934b54de4dd2f01b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}