{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874277249",
    "entityType": "User",
    "nonce": "0x1c41e4f3fe09edcfb8ea9adb44bfa4733c60fb22c6611c2d75d5ced407d60867",
    "signature": "0x1965e427a42214578d429df49303ced335d657f44428fe0536569849627f10ef4063fb9bad3621d1d8bcf17fca02a55cf3a9326b4179c809bf2cb169deffe1481c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}