{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x134612b97bc1897d9fb596fd47f806f3f1b385c73ada866fb1de41063a277f79",
    "signature": "0xb3805a8efdeb6e565be152513cc13f36283f2d3cf72394b7a66a9a3ad1897eb97a36a7c6e805ce647cc6c6b3226b5292754d071f1a972541ea71cc83803ce88a1c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}