{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "479619",
    "entityType": "User",
    "nonce": "0x0ca67a4fe83c3ea97909adffd9dbc15a5a55c73aeff5de7c41d68ffc0edc7742",
    "signature": "0x060f7d91bc6c29d2b16f9d873a9c4e6fbf40a49f4b3ca366d5275772ec2c631f2e5d6219ef2f317a15a1e01f00b3c27f05c87b67c6e73ae09566fde64ce96d1f1c",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}