{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x5cd94637ebbe85966dec5d75143cc2003fc85bbcb211e2522bb8da51b75d1fd2",
    "signature": "0x2aa3c2f1d60ec59a3b6041be5f7bb1b1b8174983c1787ade7ff78b507e7242677bfa1ed6d2f174febc475e351ff19f511c122d444f0627046940f8a0c8b0b8851c",
    "signer": "0xC0f8D2C092ae50e1512d827eBeb817e1ea4112E0",
    "userId": "451729998"
  }
}