{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "87716",
    "entityType": "User",
    "nonce": "0x4bab712d4608398128bcce909d210b646c47045588295cce900fdf1ab292f37e",
    "signature": "0x9aabbfbc7bd4bd0d11a4ac9c4ea08212ccaf0e5c5c45186dbdb982ba5bd5fa9c694c644f8590f384dbabe07eb9dc69d2c08cd3295589c3355da12854b45955a31b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}