{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "600772925",
    "entityType": "User",
    "nonce": "0xf979d542e88d934755c906f303c7bef62be7468609fa3253367a2cf99edb1c26",
    "signature": "0x492c76b13f9b84f63e7236162143b11679d7fd7c875fd5e94ad65d9ddeae282e2d24e359a498aa348a7c8e0753cbbbe3700097416b503ef57e1ba59598229bb41b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}