{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326301280",
    "entityType": "User",
    "nonce": "0xab0883e301b99a17b87cdadaf614f108a0018444aac09eaf445b2acc74a34d53",
    "signature": "0x67cea92654b144c95a7306870e029ff714998c140f3bf6fb94e732fb04c34c18249075a4d64b8e7cc7a4e0dc87c82c7dc98bc819be6bac16b4ff201603e2c60e1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}