{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139",
    "entityType": "User",
    "nonce": "0xa7f49cbf60f8ac1bdc4b954d169c1f5592df4de772c7612c1969acbe594512dc",
    "signature": "0x30366d3735e39f78d9e717c4261559285536e89803d160ba07d40da4092458a03d889124accdb0f533f9264bc56ca926d0719732d63fb44431307ef35da21d051c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}