{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0xe8c6fda9568f1082da43a57f4f7bc124ad55048504cc8e7ed641ca6bd744a2dc",
    "signature": "0xc442b47810db6af7ad3d3ce29e040eabc61dfc4da546b0233dd028ee275a1be803b46327d0c6eb168ba8b2021e5fd13a8e492aec7c8f56c7bcb8b071b21063721b",
    "signer": "0xb7cfC3e8ADEA33d90F4f4B34f672a1C391955768",
    "userId": "120328"
  }
}