{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0xbd3ddfcfe0883a2c7d51012b877e5558c7f41091ade55ec0064b06ad18da801f",
    "signature": "0xdd99d142d5e9c4e9819c7dfc03af31a7521e8df43e7e0bb51bd8b5cd0f4d6a7e1b9692a28165d0619e8d54e60d2cae5c94e7c66385835128c1c06055180e7da51b",
    "signer": "0xD06A00B950F1f08B348e3cEf0B75Da0010adF313",
    "userId": "238712"
  }
}