{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd7f29bd9029672681dd30c08d14c8b6fe0bdf2ebbc4983cdc4624ac840e85403",
    "signature": "0xf00f0b91a7e4288e52a980118610e16fdf2430cae1f867b751f09869b2c245e87842b934f3abc3934b24354aaf2a808fb117920f1ad75227e5f08c35fcb769e51b",
    "signer": "0xa270540aFe9A434057fC5e4FCcB82ea2Cbe23D8f",
    "userId": "363959557"
  }
}