{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374163",
    "entityType": "User",
    "nonce": "0x35bdcbcf870281c431128f118b839e183f73fd3aa2894fd4a2b8c8e609d9ebdb",
    "signature": "0x7cd6cf9d20aaa31ea35d8e9d4f039da2e2b7500eb89696bb79e3327665e0503e0651a65f5ccb86adb3dfe9f9afe8f2d4cecc9cf73a51b3a1de6f10c981e277ce1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}