{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389177",
    "entityType": "User",
    "nonce": "0x45a28847eefb5fb2ac60988387f2f77e09fada40bd369e6c42547870f9af0ebd",
    "signature": "0x2b9993150c62ad7a342511c8f5acd2659551c70bd7fe37e2d569614c12df0a161874def2ce03794c69d68847c5accdf7b962a0feb61fdcdb23bb634cc9eef2311c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}