{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "760481887",
    "entityType": "User",
    "nonce": "0xeb37d3ae2203642ee40a4ab01bea5d2b4e7dbf38262fb7ff9a4045d91562b5ca",
    "signature": "0xe78b212dc853096e6fee24564a220b9dd63a6e81b3f3a5a2fcbef600d297538e2dcd4e06a159bfb241028814d748f385e28d629515818758b5c6bf18e658b0231b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}