{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "853591809",
    "entityType": "User",
    "nonce": "0xad438d1b87d22c27a1a5c4846fa2beecb5ab6a848100f6b863bef3fb4241da2e",
    "signature": "0xc6ac001f6574c16815c97a1d2fc63177b41e2681ef95db66f96e94725251d18e062248bb918ed711443d146297b2365ab4463b4619fafdab11ba27538d02972f1b",
    "signer": "0xf40D844F18ceEb158472fa074B5706946f2bb643",
    "userId": "1721"
  }
}