{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "555449794",
    "entityType": "User",
    "nonce": "0x96a7cc557533585859a09d36c661d61a872056f47ffbe588fd314972e8cb178c",
    "signature": "0x01f5671dac6f49d68a8dffc6bdc1270b9f9997c861c17860c51a6b00c0f3e3f570c938f915916a1f0146974c966e9b28448e8999fb6d7de1c484fdf40751b8cf1b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}