{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281986899",
    "entityType": "User",
    "nonce": "0x7e79dc3069b8ff671766a65a340b5cb375ed6273c9926c981d3833821108405e",
    "signature": "0x519d008e734bf5071099c4701ba823daee4426735efd8de8728d8a4652a3ca90214d2e6c31e5be3f4007144558e86ca0a1eba49faeb61ed1150b36133dd4f4a51b",
    "signer": "0xA5594f75935B53086a8f3231b314C131605FEDA6",
    "userId": "140185425"
  }
}