{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "632918751",
    "entityType": "User",
    "nonce": "0x78a6a9b3319889cbcfbdc562032dd57243f990ae3fddc8357839aba36ac48115",
    "signature": "0xf9ba7c8ec9ccb0d7a17b5e001d81a0b16230248e84c47cea79fe55a06ae0aea9694052ad2f8ae19aab6cc1032d66a034fc1d6edd17bd0f093616534122ff85791c",
    "signer": "0xb4E91a4b8675eF44C7E5706c7847AB5E19bf8Cae",
    "userId": "778921527"
  }
}