{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0xa6fd1281ea4ce45a0239cef1335a86cff04fda2d2143e76ddaa5c4c3589a46a4",
    "signature": "0xf804927cb52a4f2a3a1fd4b73188c3c1c694e68ce744e645bd21b0af3fe43c721db64925808289152a63d3ed33121049d023624b59a36e5182417e8dd2793b831b",
    "signer": "0x5f7a2bcadaC17cD6C8Fd726c2Ba3dE8bE24B7D31",
    "userId": "629635445"
  }
}